Tough to remember, but I was loud and nonviolent, based on what i know about myself. If you see a kitten bite another kitten too hard, they yell out. I try to go "OW" when I'm training a young one not to bite, and then move away (fun time is now over). A mama cat will bat a kitten's ears for misbehaving, but I don't do that. I mostly suspect I didn't react how her instincts said I should (i didn't hunt and play with it and then eat it). Combined with the loud noise, it wasn't something worth trying again. Could've just been a coincidence, because it's not like training them out of biting where there's a clear progression to gentler biting and then licking and then a little pause when my hand is where she would normally bite it.