J.O.
You could try the BRAT diet for a few days, and see if it helps. Give her nothing but banannas, rice, applesauce, and toast, with only water to drink. Make sure the rice is unflavored, perferably brown or basmati, make sure the applesauce is unsweetened, and the toast is whole grain and toasted DARK. My kids liked the applesauce ON the toast, rather than dry toast. This helps tummies recover. The banannas have potassium to recover electrolytes, the rice firms up stools, the applesauce gives pectin, again to firm up, and the dark toast charcoal, to absorb. Worth a try? Good luck!