A quick update,
she is eating very well, I feed her twice a week so she gets to catch up a little bit, in total it is one pinkie and a little bit of fish per week. This should work, I guess.
Another short question- is it normal that she hangs out in the water dish a lot? Like, A LOT. Sometimes she even falls asleep and when I go to bed I see she is still in there.. I thought maybe the temperatures were the problem, but they cant be, it is not warm in here..
So it seems like she just likes bathing?
Also, she drinks very often. Maybe it's just because I watch her a lot and I notice it all the time, but she takes really big sips a few times a day.

Odd questions, I know. But she's my first snake and I want to have her as healthy as possible..