Ugh..help?

[Dave Green]

That's how she was kept before me. I've had her for almost a month at this point in the 20G tank. I'm going to bring her to the vet sometime soon for a general exam and to see if she's sick or something.

Try what Deborah said and forget the vet. Taking her to the vet will create stress which is the opposite of what she needs. Some babies will thrive in a 20 gallon but many won't in such a "large" tank. I have customers that try a larger tank and the snake is stressed and won't eat. Switch to a small bin and that fixes the problem most of the time.