That's mainly what I was looking for in her bio. It would be an interesting dynamic to have someone that doesn't like mudbloods running away with them. Just add something in the bio that gives her a reason to run away.
Also, for everyone in the RP. I will start the roleplay on the train to Hogwarts. There, a few snatchers can hop on the train and be introduced as they take names of mudbloods. From there we can move onto their time at school. Then, they'll find out that the Muggle-Born Registration Commission is going to come visit the school. Then the rumors about the MBRC can get to the students and they'll plan to escape before it comes.
Also, for everyone in the RP. I will start the roleplay on the train to Hogwarts. There, a few snatchers can hop on the train and be introduced as they take names of mudbloods. From there we can move onto their time at school. Then, they'll find out that the Muggle-Born Registration Commission is going to come visit the school. Then the rumors about the MBRC can get to the students and they'll plan to escape before it comes.