Sirius and Andromeda become happy and excited when they hear this, as they can finally save their cousin/sister.
Harry is also happy to see them act like this, as it is the main reason he decides to accept it when they request him to do this.
Inside Narcissa's head before she comes up with the decision she weighs both the pros and cons of her saying yes and the pros overwhelm the cons by a large margin.
She can do the work as a healer just like her sister Andromeda, which Lucius didn't allow her to do as it is going to ruin the reputation of the House Malfoy.
She is sad though as she knows Draco is not going to take this news well not after he knew that she married Harry Potter after divorcing his father whom he highly look up to. He might not talk with her again after this.
Her feeling for Draco is going down with every meeting they have as he is turning more and more like his father who is nothing but a person who licks Voldemort's feet to protect himself and thinks that he is superior to others. She tried to change his nature but the way he behaves every time makes her go crazy and she is not believing a bit that he is his son.
It is the only other cons she has except for Harry being underage.
___________________________
After their meeting, Sirius called Griphook as he also becomes the House Black vault manager after Harry becomes the Heir of the house so that he can draft the marriage contract between Harry and Narcissa.
It took some time but after it is completed, Sirius pass the letter to both Harry and Narcissa to see if everything is right.
When they are making the contact Harry asked her to tell him which house name she wants to take in as he is not sure which house he should choose. He already told her about the houses for which he already has a fiancee but he didn't tell her yet who they are.
She thinks about some time to decide which house to choose, and she finally decided to choose Slytherin. She chooses Slytherin because it reminds her of Hogwarts where she has spent some of the best times in her life with her sisters so she has some personal attachment to it.
Harry doesn't have a problem with her choosing Slytherin and told Sirius to write to make the contract with the House Slytherin.
When he handed them the contract they looks at it and found no problem with it. It contains all the things they wanted and is already discussed and it also doesn't have a clause like the last one which is what they want.
After is done they both are ready as Sirius is going to break the marriage between Narcissa and Lucius and just after he did this, both of them are going to sign the contract which is going to make them married in eyes of wizarding law and magic.
Sirius then started speaking and their focus is now shifted to him completely as they don't have to mess things up.
"I Sirius Orion Black, Lord of The Noble and Most Ancient House of Black, break the marriage between Narcissa Malfoy née Black, and Lucius Malfoy by request of Narcissa Malfoy née Black and bring her back to The Noble and Most Ancient House of Black."
"I Narcissa Malfoy née Black accept the decision of Lord Sirius Orion Black."
"So mote it be."
After Sirius said this a faint light shone from his wand and the wedding ring Narcissa is wearing is gone from her ring.
"You are now single again Miss Black and as for the ring of your ex-husband, it is already gone to him as the ring belongs to House Malfoy."
Griphook replied as he see that all of them are shocked after seeing the ring is disappeared so he has to explain. He told them that the wedding ring belongs to House Malfoy so when they divorced the ring also teleported out of her hand as she is not Lady Malfoy anymore.
After that, both of them sign the marriage contract and he put a wedding ring on her ring finger which has the Slytherin family crest. It is similar to the Lord ring he has with the only difference it being it is more feminine in shape.
He still does not believe that he is now married as the way everything went.
At the same time, Narcissa is looking toward the new ring she is wearing on her ring finger. She is also surprised that how fast, smooth, and easy things went. She just divorced Lucius Malfoy a couple of minutes ago and now she is married to Harry Potter and becomes Lady Slytherin.
She never thought in her life that she is going to become Lady Slytherin in the future and not only that she also going to marry someone so much younger than him.
She is somewhat frightened as she didn't know how well Draco is going to take this news about her divorcing his father and marrying Harry Potter.
When both of them are thinking about this, a faint light again shines, but this is around both of their rings. Harry's Heir ring which always shows Potter's crest is currently showing Slytherin's crest.
"Congratulations on your marriage Heir Slytherin and lady Slytherin."
"Thank you Griphook"
Griphook congratulate them and Harry thanked him. He is still weird about the feeling of married to someone but he is trying to overcome this feeling.
They hear someone entering the room and when they say who it is, they saw Ragnuk. Harry, Sirius, and Andromeda know why he is here as they call for a meeting with him regarding the locked they found.
Narcissa didn't know about this so she won't know what the King of the Goblin nation doing here. She becomes more surprised when she hears him congratulate them quite friendly, as she always hears that Goblin and wizards don't get along. What more surprised her is that both Ragnuk and Harry used their given name instead of their title.
"Congratulation on your marriage Harry and Lady Slytherin."
"Thak you Ragnuk."
Normally the goblin who is handling the vault of the House gets somewhat friendly to the family but it is the first time she sees and hears that Goblin King is being friendly to someone.
Harry chuckles slightly after seeing her new wife's expression as he knows how the wizards or witches think about the goblins. He knows that she never in her life thought that he is a friend of the Goblin King.
_______(Malfoy Manor)________
Lucius Malfoy currently planning what to do, so that he can reduce the anger of the Dark Lord towards him after his last attempt is failed.
He also doesn't know how but Harry bloody Potter is Heir of the Hogwarts and he fucking removed him from the board of directors so that he has no control over Hogwarts also which ruins all of her plans to take revenge on him.
While he thinking, a faint white light shines on his desk and when he sees what happen, he sees a ring appear there out of nowhere.
He is not sure how the ring appears here. He is looking toward the ring without picking it as he doesn't know if it is safe or not until he saw the crest on the ring which is the crest of Malfoy.
When he picks up the ring he quickly identifies that the ring belongs to his wife or he said his ex-wife Narcissa.
He just pick the ring and thought that she probably decided to divorce him, which means she is going to die after an hour. He doesn't care much about her anyway but he becomes angry as to what she did as it will ruin the name of House Malfoy.
Lucius believes that she is going to die in an hour so he called Draco as he wants to tell him about this as he deserved to know, how his mother betrayed them.