Notch at the end of tail

Hi! Boga had a longer shed than usual and I wasn't too worried until today. The tip of her tail has a notch in it. At first I thought it was loose shed, so I ran my thumb over it to see if it would flake off but it was a definite dip. There's no blood, no fluid discharge, and she doesn't seem bothered by it during normal activities. When I touch it, she sometimes whips her tail away, but otherwise she pays it no mind. She's eating normally, is alert and active, her temps are right, the humidity could be bumped up a bit but that's more my personal preference

I took some pictures of it (she's darker than normal because I had her in the window so she'd stay still.) I hope this is clear enough. If she were bleeding or in pain, I'd call the vet but she seems fine unless I touch it.

Any ideas what I should do?

It looks like it was nipped or caught in something. If it's not an open wound then there isn't a lot to do for it. Keep an eye on the area though and if you see the damage start to spread up the tail then it may indicate infection and a vet visit is warranted. If it doesn't change then it's probably no big deal.