Probably should fill the water bowl and mist it some more perhaps. If there's an open top, put damp paper towels or a towel over the top so it doesn't evaporate/dry out so quickly. If it's really dry (and from the looks of it, can dry out quick), you might wanna just mist it so it seems wet/really damp. Your bark doesn't look so damp.
Another thing if you don't have moss is wet-damp (squeezed out) paper towels. If she spends a lot of time in her hide you can put one in there too.
A new snake I got that was going through a rough shed I stuck in with a bunch of moss and paper towels (REALLY wet) in a little tuperware type thing, with room for her to move around and nudge the shed off, worked like a charm and she was much happier after.
Sometimes they get pretty wild with rubbing onto things, it doesn't look worrisome to me at least
Then again I'm nowhere close to an expert, just trying to help out!
Also, could someone link to the $40 stats? Or a thread with a good setup in terms of dimmer/tstat for temp and humidity control- I'm looking to getting a better setup than I have, though not hundreds of dollars like I've been seeing