Maybe Snape did something that went against Lily's expectations or values, and she uses the howler to express her disappointment. For instance, he might have joined a group she doesn't approve of.
Well, sometimes it's because he did something really naughty or broke a major rule at Hogwarts.
He might be initially shocked. After all, getting a Howler is a very public and embarrassing thing. He could be so ashamed that he immediately hides away to read it privately, his face turning red with a mix of anger and humiliation.
Hermione could be the sender. If Snape has made some unfair judgment in class against Gryffindor students, Hermione, with her strong sense of justice, might send a howler to him to voice her protest.
It might be because Snape said or did something hurtful to Lily's friends. Lily is a loyal person, and if Snape insulted or harmed her friends in some way, she would be furious enough to send a Howler. In the context of fanfiction, there could be a new character introduced who Snape treats badly, and this angers Lily.
In some fanfictions, Snape might focus on his teaching and find purpose in mentoring students. He could also start to explore new friendships within the wizarding community, like with some of his colleagues at Hogwarts.
Well, perhaps the howler could be from Lily. It might scold Snape for his actions in siding with the Death Eaters in his youth. It could be a moment of self - reflection for Snape as he listens to the angry tirade from someone he once deeply cared about.
Maybe it happened because he made a big mistake in a magical experiment or broke a strict school rule. That might have triggered a howler being sent to him. The possibilities are endless in fanfiction!
The fanfiction usually shows Snape being quite shocked and embarrassed when he gets the howler. It might lead to some interesting character developments and interactions.
Severus Snape and Lily Evans were characters from Harry Potter. They had been neighbors as children, and Snape had been keeping an eye on Lily long before they had met. When Lily accidentally discovered that she could use magic, Snape appeared and became friends with her. Snape also told Lily that "you are a wizard" and became Lily's magic teacher. They had studied at Hogwarts together, and despite their special relationship at the academy, their friendship was pure and beautiful. They were both proficient in Potions, and had plenty of opportunities to attend classes together. However, there were differences in their values. Snape disdained to be a hero who punished evil and promoted good. His gentleness was only for Lily, who was filled with justice and love. This difference eventually led them to break up. It was due to Snape's impulse to shout "Mudblood". Lily also fought back, and their relationship could never return to the past. After Lily's death, Snape lived his entire life in agony and regret. The first question he asked Harry in his first Potions class (what would you get if you added the powder of the daffodil root to the infusion of wormwood) also hinted at his feelings for Lily. The daffodil was a type of lily, and the language of the flower was regret that could not be shaken off until death. It also symbolized pain and sadness, and bitter wormwood represented absence. In addition, Dumbledore convinced Snape to protect Harry on the grounds that Harry's eyes looked like Lily's. Snape protected Harry for 17 years until his death, which also stemmed from his persistent love for Lily. Harry Potter and the Order of the Phoenix is not enough. Please click to read the novel!
In the original Harry Potter novel, Snape and Lily had a complicated and profound relationship. They had been neighbors as children, and Snape had been keeping an eye on Lily for a long time. When Lily found out that she knew magic, Snape appeared and told her that she was a wizard, becoming her magic teacher. They had been good friends who shared everything and had entered Hogwarts together. However, the difference in their academies and their personal beliefs caused the two of them to gradually have differences. Snape practiced black magic, while Lily was filled with a righteous mission. The difference in beliefs eventually led to a rift between the two. The direct cause of the rift was that Snape had called Lily an insulting term,"Mudblood", on impulse. After Lily's death, Snape lived his entire life in pain and regret. He had begged Voldemort to let Lily go. After Lily's death, Snape promised Dumbledore to protect Harry because Harry's eyes resembled Lily's. He had silently protected Harry at Hogwarts for many years, even though his relationship with Harry had never been very harmonious. Snape was an exceptional Potions student, and Lily was a top Potions student as well. They should have plenty of opportunities to attend Potions together. The emotional entanglement between them ran through the Harry Potter series. Snape's loyal love for Lily prompted him to deal with Voldemort and Dumbledore all year round, becoming a double agent, and many of his actions hid his deep love and longing for Lily. Harry Potter and the Order of the Phoenix is not enough. Please click to read the novel!