Okay so my boyfriend and I have had our two female rats for a little over a week. They are both around 7 weeks old. One of them seems to be adjusting better to us, her new home, etc. better than the other. Pippa, the one who is friendlier allows us to handle her just fine and she is more active. She's much calmer when being handled. Nelly, on the other hand, tries to get away when being handled and is much harder to take out of the cage. She also hides. Will she eventually adjust? What can we do to help her? Thanks.