I have not been on the forums for quite some time now, and kind of miss it

But anyways, I have a snake that will not gain weight at all, she is eating adult mice every week, and of course just to add in, they is a stubborn feeder and skips some meals... she is about 7 months old and only weighs maybe 180 grams if I had to take a guess, I don't have a scale.

what do you guys think I should do to help her gain weight?