My rat bit me really hard. I've been trying lately to get them out, play with them, pet them and stuff, as I haven't done that all too much as I guess I should have. Is that the reason why, or is there something else? I have this paint on my finger that I can't get off, maybe she thinks its food? Will she stop this the more I bring her out and touch her, feed her treats, etc? She's never done it before. She's the timid one of the two that I have.