I possibly have mentioned this in another comment but something about your writing has this real sense of character. To be honest I don't really have any critique other than purely subjective stuff (which, in essence, all critique is but these more-so). Personally, the title put me off. May be because I'm a cook and have developed an aversion to the word gristle, but I just don't think it captured the essence of this voice. The word works within the piece however, quite strongly as well. I also found the first line to be weaker to the rest, but I only mention this due to the sheer strength of the poem as a whole. I felt like I was there, like I knew the personas, and it's a feeling I rarely get and aspire too. You have a real gift, look forward to reading more of your writing in the future.