I am a first timer and only got one from Petsmart. My new baby is not doing so hotshot has recently started pulling her hair out so we let her out of her cage and was doing really well when she started eating the carpet I would snap my fingers like I do with my dog and my kids (don't judge my parenting) and she stopped but she was doing so good then she started biting me out of the blue. I put her back in her cage. I need to know if she'll attack a new rat? Did I wait too long to get her a companion?