Pretty good update, I must say. The idea of biting one's own teeth is a bizarre one (perhaps you were looking for "clenching"), but aside from that, nothing stood out as off. The scene transitions felt a bit abrupt, but that could merely be because I haven't read this story in a while.
Looking forward to more.
Hmm... At least in Finnish you can "purra hammasta"... Also, Google proves you wrong. Perhaps it's just a rare phrase?
Thanks for reading and reviewing!