Thanks everyone for responding firstly, this one had the most questions soooooo..
It is very possible she's going into shed, again these are my first snakes and I've yet to WITNESS a shed in person yet, but she seems to be getting a TINY bit on the milky side. If she is, it's very faint still, she'd JUST be going into it. I expect her to be grumpy around shed time, but the FEROCITY that she struck at me with, she could very clearly sense where I was and she was NOT about letting me get away.
The room she's in is about 20c, but her hot spot is about 90f in the rack.
As for anything else changing, Nope. As I said, I've only had her a couple weeks. First week there were no problems, this week she's been grumpy and now the striking. Honestly I'm still shaking, I'm leaving her rat in there tonight and if she hasn't taken it when I check her tomorrow I'll wiggle it again for her, but for now I'm still a bit too shaken up to open that tub again. I checked in on her a bit after posting this thread and she was still right at the front of her tub, so I wasn't going to risk her bad mood too quickly to open it. I'll let her settle down and then see her again tomorrow after she's chilled out a bit.