I kinda know her from past experience. She's a bit young and she asks for a little too much (food, house,wool). I think you should tell her that you are not comfortable with her taking your stuff. If she doesn't understand for a while, call in a mod to explain it to her.
I'm curious why she needs a new home, though. Last time I helped her, she was building some massive house for her friend. She actually finished it too because I filled in the water and stuff where it was necessary..