Some of her more practical friends might be worried about how Mal will handle everything. They could be concerned about her safety during the pregnancy and whether she's ready to be a mother, so they would offer all kinds of advice and support, from finding a good doctor to helping her with her daily tasks.
Her friends might be initially shocked. But then they would probably rally around her. Some friends could be super excited and start planning for the baby's arrival, like getting baby clothes and toys.
Their friends from the Isle of the Lost might be initially shocked but then very supportive. They would probably see the baby as a new hope or a symbol of a different future. For example, Uma might be hesitant at first but then realize that the baby could be a bridge between different factions.
Jay could be a bit more awkward at first, but he'd be very protective. He'd offer to train the baby in self - defense when it's old enough, in his own humorous way. And he'd be there to help Ben out with any tasks that need a bit of muscle, like setting up the nursery or moving heavy furniture.
One possible plot twist could be that the baby has some sort of special power. Maybe it's a power that is not known in their world and it causes all kinds of chaos and confusion. People might be scared or intrigued by the baby.
Evie would be the doting aunt. She'd be constantly making little outfits for the baby and spoiling it rotten with cute accessories. Jay would be the cool uncle, teaching the baby little tricks and showing it how to be brave. Carlos would be a bit more cautious but would also be very protective, always making sure the baby was safe. As for the other characters in Auradon, they'd be excited and curious, seeing the baby as a symbol of the new unity between different worlds.
Sakura might immediately start trying to diagnose him. She is a medical ninja after all, so she'd be all business, checking his symptoms and trying to figure out what's wrong.
Evie would be over the moon. She's Mal's best friend and would be so happy to see her in a loving marriage. She'd probably be constantly offering fashion advice for Mal's new royal look. Jay would be proud of Ben for finding such a great partner. He might also tease Mal a bit in a friendly way. Carlos would be excited and would love to have a friend as the queen. He might start thinking of all the new inventions he could create for the kingdom now that Mal is in a position of power.
Grover would probably be really excited. He might bring all kinds of nature - related gifts for the baby, like a special plant that has protective powers. He would also be very protective of the baby, using his nature senses to detect any danger.
Their pirate friends would probably be both excited and a bit clueless. Jack Sparrow might try to give the baby some 'unique' gifts like a small piece of treasure or a strange trinket. Gibbs would offer practical advice on how to keep the baby safe on a ship if they ever take it to sea.
Chad would be a very protective and gentle presence. He would be like an uncle to the baby, always ready to pick the baby up and play with it. His calm and strong nature would make the baby feel safe.
Ban would probably be excited and start thinking about all the fun things he could teach the baby, like how to steal food without getting caught in a humorous way. King might be a bit more reserved at first but then offer to make the most beautiful crib with his powers. Diane would be super excited and offer to babysit all the time, cooing over how cute the baby will be.