Thanks, guys! I've read a lot about their fasts, but it's still been worrying me. The thought that a living thing can go so many months without eating a single thing is hard to think about without panicking.

If all else fails, you could try an African soft-furred rat. I have heard that seems to excite their feeding response.
Thanks. I'll look around and try to find one... lol, now I've got a rat, mouse, and now maybe another rat waiting to be eaten.

When you say lethargic, do you just mean, hanging out in a hide. Not doing anything? Ball pythons.... Generally like to stay in one spot. Ive got several animals that will just sit.... For days and days in one hide or the other.

When you take the snake out of the enclosure, does the snake move around and try to find a place to hide? Or just chill with you?

lethargic, is more of a word for, having trouble moving, and otherwise looking sickly. Not for a snake that is quite happy to be curled up in a warm spot, and just never moving.
She's always in her hide, which is normal, but she is usually very alert and surprised when I lift her hide and wake her up, but recently she hasn't been moving at all until I get her out. Then she acts like she always has... always crawling around, but out of curiosity rather than looking for a place to hide.