My Female Pastel ball is 11 months old and weighs 543 grams. She hasn't eaten for 2 months now. She doesn't look very good at all. I've been leaving her alone, I've tried f/t mice and different sized rats. I've had her for 10 months and nothing has changed in that time. For the whole time she had been eating mice, never has taken a rat. I'm getting really frustrated. Any suggestions ? Thanks