I got her out for transport, and she's in shed. Usually when my snakes are in shed, including her, they don't squirm, but until I talked to her (I told you she's quirky), she's been moving a lot.
The bump in her tail has flattened a bit and gotten smaller (quarter to a about a nickel). I hope this is a sign it's maybe a low grade infection. Or it might be the shed is affecting the appearance. Still taking her to the vet.
BTW, because Los Angeles is so arid I usually give my snakes a shoebox-size of water, so if they want to soak safely, they can. Also, because sometimes it gets hot and it's hard to thermoregulate the apartment (I do try though) so they can cool off by soaking. The humidity in the room always stays between 50-60%. (I check it daily.)