Ayy.

So, OF COURSE she's going to have to help Timoleon Maxime when he's turned and he'll hate every single moment. And then side-eye her a lot.

Delilah Warbeck can be a friend? She's older than Merida, but she's a healer. Although she's at St. Mungo's. IDK. Potential there.

Clifford Hillicker is a couple years older than her and a former Gryffindor. I'm not sure if they would get along - Cliff is super rude to everyone and he doesn't have many friends because of it. They might though, because she could hand Cliff's word right back to him. He'd also hate her in principle that she's UC.