Two big ones, I know I said three,
She swept the camera with the barrel and didn't receive a correction, it should have been immediately dealt with.
IMO←
During a lot of her rapid fire, the recoil was dominating her body. Part of her instruction should be to regain control, never mind not loose it in the first place.
Again, this is important, I support the idea, but there are notable flaws in the execution.
She's (IMO) handling weapons too large for her size.