Good that you're eating better! I know that can be tough. My T once told me that all of the medication and therapy in the world wouldn't help me if I didn't take basic care of myself, and he was absolutely right.
The bombings were awful. I have estranged family in that area, so I understand the anxiety being there would have caused. I'm sure your Dean understood that as well.
Can you contact your Prof to get some clarity about what you don't understand about your assignments? As a prof myself, I'm always happy to respond to such e-mails from students. Then you can show your Mom--if she demands to see--the steps you've taken. If she uses that as an excuse to belittle you, steel yourself, and calmly say, " I'm taking the steps my Prof recommends and finds acceptable; that's all that matters." And just ignore anything she says further. Don't engage. I know how frightening it can be to confront an abusive parent, but putting up a responsive wall they can bounce off of is easier.
Have you ever read the short story, "Bartleby, the Scrivener"? It's by Melville. It's so old, you can find it free on-line. I think it would help you to see how he resists.
Keep letting us know what's going on, ok?