Help Ball Python lip injury

My ball Python has a dent in her lip right below her heat pits, it doesn't look cut or anything it just looks like part of her mouth is pushed In. I don't know what to do about it she doesn't seem bothered and I have no idea how it happened!

Pictures would help, can you see inside the mouth?

How do I put an image up? And I can't really see inside at all.

You need to upload it to something like photobucket and then place the URL inside [IMG]ImageURLhere[/IMG]

http://i1155.photobucket.com/albums/...pspwtdqxxs.jpg

Did you every figure out the cause of this? My beep has the same issue after escaping from her snake bag.. wondering if she cut her snoot in the process