You can let her hop around some as moving around will also help clear the anesthesia faster, but you don't want her getting too active, and definitely don't want her running or jumping up on anything. I usually set up a pen in the family room, that is about 2x2 to 3x3(depending on how big the rabbit is). Enough space to explore but not get too active, and then I can keep a close eye on them while they recover.