[@AbysmalDemon]

Lavender is torn in half most of the time. She is just now learning that her biological parents were magical folk, and has no recollection of either of her parents, as they died when she was only a baby. Lavender has always known she was adopted, it's only the witch thing that is news to her. Oh and the fact that her parents may have always known about all this is starting to dawn on her. 
She adores her adoptive parents, tending to gravitate towards her dad as he is the level headed parent. Lavender and her mom are more of the worrying sort. Lavender has a vivid imagination and can use this to her advantage. It can also be a disadvantage. When she is worried, her mind tends to wander, leading her to places she would not have thought possible.
Having this in common with her mom, Lavender tends to turn to her dad for advice and help. He will certainly not add to her troubles the way her mother might. 
She's brave, though. She's always been different, and has had no clue why, or how different, until recently. She is trying to come to terms with who she is, who she wants to become, who she thinks others expect her to be and who her parents are. Magic scares her, after all it killed her parents, and her experiences on the train haven't helped. She is determined to make the most of things, though, and hopes that learning to control what she is capable of will make magic (and potentially herself) less likely to hurt anyone.

I think slytherin is out, she may be a full blood but she certainly isn't proud of this or anything. She was simply not raised to care.
Perhaps Hufflepuff may give her too much time to dwell on that which troubles her, may give her too much freedom? 
I guess I'd like to see her in either Ravenclaw or Griffindor, though I might be able to work with Hufflepuff, depending on who else is in there...