If she's far away I poke her with 6B[m] and 2B[m] or 5D[m], D so the staff flies in the air to prevent her air dashes.
Up close I block and wait for a opening to jab the hell out of her. I try to 5A[m], 5A[m], 5B[m], 5C[m], 63214D[m]-(A, B, or C) as much as possible to free up some space.
Thats my basic strategy when I fight her.