Sorry for all the posts in one day but I am new

my girl seems to be yawning. I have been having a little trouble getting her to eat so I wonder is they are related. She is a 1.5 year old royal python. She has always been fed frozen thawed. She plays with her food. She puts her mouth over the hoppers face and kind of shakes it the loses interest. It almost looks like she is trying to suffocate it.

That was two days ago and I have noticed that she has been yawning since.