Daisy is home from the hospital, and seems mostly to be her normal perky self, though she is resting now. Just after eating the meal the vet said she should have when she got home, she passed a piece of corn cob about 2 inches long, as well as at least one smaller piece. Hopefully that was all that was causing her problems and she will continue to improve. Thank you for all the kind words and good thoughts. We are so glad she didn't need surgery.