I would assume that she is trying to shed & raise her humidity to about 70% immediately; either provide a humid hide, or mist her home, & add some moisture to her substrate if appropriate.
BTW, what kind of substrate are you using for her? Make sure her water bowl is refilled with fresh water.
Shedding: in case you aren't aware (?), snakes get cloudy (milky) looking, then if you happen to miss that phase, they go "clear" (meaning they look quite normal, as if they've already shed- because their own body secretes some moisture to facilitate shedding, between the old & new layer of skin, before they actually shed). It's only after that they actually shed their skin- & there's no exact length of time that it takes. *Learn to watch for the 'signs'.
I would assume that the bangs you heard were her trying to start the process of shedding & it sounds to me like she is too dry & having some trouble.
They start the process by rubbing their face/head on things, & if they're having trouble, they can be quite pushy, depending on what's in her home.
No guarantee, as none of us are seeing your snake, but this is my hunch, & I've been living with a whole lot of snakes for over 3 decades, lol.
*Also: snakes in the process of shedding typically act very nervous & defensive. And if you offer them food, they'll act AFRAID of it too.
BTW-![]()