Tooth Fairy

So for the past few days Ryan and I have noticed that Angel has been glaring at us with an even more angry pouty face than usual. :P The left side of her mouth is pulled up and makes it look like she's glaring at us. I tried to pull her lip down, but it just went back. So I did some more investigating. Here's my theory: I think her bottom left K-9 tooth is loose and holding up her lip. She's lost 2/4 of her large kitty K-9's, and I think this is the 3rd to go. I can clearly see the root of the tooth is more exposed, causing the tooth to hang out of her mouth more and catch on her upper lip. Here's my question. Do I let it fall out naturally, or do I take her to the vet? She's had this happen before and the teeth usually just fall out, but since it's catching on her lip, I kind of want to do something about it. I don't think it's hurting her, it just makes her look goofy & angry. I'm NOT putting kitty treats under her pillow when the tooth falls out.

Her Droopy Kitty Face

It's hard to see, but the tooth is holding up her lip.