friend of mine who doesn't like it at home so she stays at my place most of the time
That's just like what happens in my Japanese cartoons. Is it possible that there will be an amazing trap on female ending?
She seems like she'd be one of those quirky characters who bursts into your room with a slice of pickle pizza and begs you to try it, to which you eventually give in and find that it isn't half-bad. Then we would eat it together and play old maid. Over time she'd tell me about her rough past at home, and I would comfort her and promise to be there to protect her from those bad things ever happening again.
Oh god now I'm jealous.