I have a female rat who is around one and a half years old and I STILL can't pick her up. She used to have a friend but she died. When I first got them they were scared of me of course and hated to be touched. I tried to get them to like me but eventually I just kinda gave up, which I regret. She's getting older and now I feel like it's too late to try and get her to let me pick her up, but I feel like her life is so boring without playtime and without her friend. I don't feel like introducing a new rat will be good for her now, she seems alright by herself. What should I do?