No weight lost (per in my original post) or at least none that the vet was concerned about. She's my fat snake, and she's still just as plump as ever. She normally eats medium sized rats, but once she went off feed the medium I threw her basically bullied her (repeatedly tapped her on the nose, once he figured out she hated that) and stressed her out. I removed him, and he is now my daughter's pet. So, per the vet's advice, I have offered smaller prey to lower the risk of injury to Kismet.

She is otherwise acting normal for her...remember, I have only had this particular BP since May...this is my first Winter with her, so I have no clue what is normal for her in the Winter. My other BP is far from normal, she thinks she's my other daughter... LOL! So, she's hardly a measure for me on what is normal with a BP.