Problem with my pet cornsnake

Hello. Sorry if this isn't the right sublemmy to ask about this, lemmy is still kinda small. But, my pet cornsnake has her mouth open like in the picture, normally it's closed. I did notice some coconut fiber substrate stuck in her mouth when I fed her 5 days ago. (Also she also ate the mouse butt-first, so maybe the mouse's tail got lodged or something?)

Anyway, should this be something to be worried about? Should I just wait a couple days to see if it will fix itself? What do you guys think it is