My snake developed these skin lessions a few months ago, it started off as small dots. Now it looks like dying scales and pimples underneath them. I took her to the vet a few weeks ago twice and he gave her some shots. He said the wounds look like friction burns? its gotten way worse and i cant afford to keep bringing her to the vet. any ideas on what I can do? https://imgur.com/a/wGTWK how she looks right now. Thank you