Hi Greenbani
Her head is hanging lower than normal in front. Her posture seems off and she is a little upset and unsteady when hopping.
It sounds like she might have a bit of a neurological problem brewing, possibly to do with the inner ear. When she lowers her head, it may be affecting the vestibular system.
Another thing that can occur is some involuntary eye movements (nystagmus). That can cause some disorientation also. It can be constant or occur after the head has moved positions. ie. Positional nystagmus, positional vertigo.
It’s best to get her checked out. It would probably be alright to take her to your regular rabbit vet in the morning unless you see further deterioration tonight. You’d possible have to take her to an emergency (out-of-hours) clinic if that’s the case. If you have some meloxicam at home that you’ve given to her in the past, a dose of that could help with any inflammation. If she is keen to eat, try hanging her greens up in something on a cage or pen wall, so she will not have to lower her head to access them. This would be good for hay & water also, for overnight.