Somethings wrong with my filly's teeth.

I'm not sure how to explain this, and I'm pretty much in shock right now, so please excuse my mixed up speech.
I have a 3 year old QH filly and she keeps chewing on her feed bucket. Now, the bucket is that really bendy rubber that you can like fold in half and its snap-proof, so I didn't think anything of it. Also, she wasn't making any sucking sounds or weird breathing noises like they do when they crib. Well anyways, I went out there today and looked at her teeth while feeding her and theres blood over one of her front teeth (kind of looks like a cut?) and the top row of teeth look messed up. O.O like, not crooked but scratched and stuff. :(
I'll be having my vet look at her this Monday and I took her feed bucket out of her pen and will only put it in when feeding.. is there anything else I can do maybe? I have a cribbing collar someone passed down to me but idk how to use it or if I should. Gah.

It sounds like she is just teathing on the bucket not cribbing. Still I would take it out, and get her a stall ball or jolly ball what ever they call it.

Do you think that could that be what my farrier was talking about when he said she has baby teeth? I couldn't understand all of what he was saying bcuz he has a funny accent. O.O Ill put her jolly ball in with her tomorrow and see if she seems to use that like she was using the bucket.

It could be when horses are young they have caps or baby teeth that they loose as they get older.

As a 3 yo, she should be losing her 2nd incisor (not the front teeth, the next set). They do bleed breifly when the fall out. The permanent teeth should be short buds about 1/2 way showing.

I really appreciate you sharing this I'm not entirely sure that she's three, but she couldn't be younger than two and a half and def not older than three.