Thanks everyone...I think she's going to be fine I did what the lady told me, I got some of the stronger hairball medicine, and went to the pet store and they gave me samples of three different foods that are for senior cats and have better ingredients and are easier on their stomachs. She had some hairball medicine last night and this morning, and I took her food away for 24 hours. (She kept waking me up last night by pawing at my face and licking my hand...I know she was hungry; I felt so bad for her!) So then this morning I gave her a small amount of her new food mixed with a little of her old food, and she hasn't thrown up since yesterday morning!! (I put a few bites of each of the sample foods on 3 different plates, and she likes the Chicken Soup for the Cat Lover's Soul Senior Hairball Formula) So on Monday my mom is giving me a ride back to the pet store so I can buy a full bag of the food that Grizabella picked out. I am still worried, but it does look like she is better now. Thanks again for the support!!!