My 6yr old cornsnake is not eating...

[Tonbo]

I have had my 6 year old consnake for four years not and she has never been disinterested in her food. Today she eagerly took her food (I live feed her becasue that is they way they feed the snakes in my animal science class where I got her from) but after killing the mouse she had no further interest in it. She is not due to shed, and her feeding was a little bit later than normal so I am a bit concerned.

If anyone has a suggestion on how to perk up her appetite as I am going to try again in a day or two, or if you think this may be serious enough to call the vet please let me know.

Thanks in advance!