In January we got our first BP from a pet store (probably our first mistake) and have been expanding our collection since. However, this first BP has not gained more than 50 grams in the six months that we've had her. She was about a month old when she was sold to us. I've been feeding her hoppers every week for the first three months and she's been moved up to mice every 4-5 days since April-ish (f/t). She is still under 150 grams. About April-ish she contracted mites but we've been treating her (and quarantining her to keep the mites from the rest of our snakes) but they seem to be alleviated. I'm a little concerned; every other BP we've had has grown more. She's got a heating pad, two hides, and a water bowl and is in a 29-gallon tank for right now w/ aspen substrate (we will be getting rack systems soon). Is there anything that could potentially be going wrong in our husbandry or is she doing fine? She's about 18 inches long and ~130 grams. Any advice/help is appreciated.