Beak injury (?) 15 week old golden comet

[pat45159]

I'm very new to chickens and just noticed a crack or chip out of my favorite comet's beak. I've attached a photo - though not real clear. The split is about 1/4" from the tip of her beak and not real deep or bad at this point. She seems to be eating OK and is in good spirits. Can I use an emery board to get rid of rough edges? Or could I super glue the split?
Or is this pretty common and will just take of itself?
Thanks for any advice.

 

[Afrochicken]

I dont know how to treat that but my Aunt Robin had a Parakeet who got his head slammed in a door and his beak got smooshed and his eye was smooshed and he was slightly mental in the head and he lived for a long time so im guessing beaks can grow back? i hope someone will help!