The Shedding Process

[Manglewantsmacaroni]

I have a snake and she keeps rubbing her snout against the glass. She also likes to push on the ground. She doesn't have mites.
Her tank is 85F warm side and 80F cool. the humidity is usually around 50%.
Is this normal?
Also wanted to add there is nothing on her face. She is not wheezing or foaming.