Small amount of blood after defecating

[Bogertophis]

I just got back from my trip, and from what my parents have observed she's been acting normal, although today I already saw her try to bite herself a couple times while I was cleaning her tank. No latching on like before, but it seems like this behavior might not be something that just goes away. I also did end up making an appointment with the vet. Even if they don't have any answers, I want them to check on the scent glands she was having a problem with before because I'm wondering if they might've gotten inflamed again and that's what's hurting her?

Bogertophis, the green tomato plants sound like a great idea, but unfortunately we don't grow any vegetables ourselves. Hopefully the veterycin can work somewhat as a deterrent. Having a breeder to talk to would probably help as well, but I bought her from an expo and didn't end up getting the seller's contact info, so I'm out of luck there. Something to learn from if I ever buy from expos again.
(Also I don't know if you were under the impression that she is an MBK, but she is a speckled kingsnake )

Oh sorry, I was under the impression that she's an MBK- maybe I confused with another thread, but it doesn't matter in terms of care & advice, not one bit. Ask your vet what you might safely use topically that would be a taste "turn-off".
Or post a free ad, or ask around, or go to a farmer's market- for someone who grows tomatoes to share a piece of stem they don't need- hey, if you were closer...