Please help! Need advice about mother

My mother is driving me freaking crazy!! She wanted to go to a movie today which was fine until my dogs anal gpand ruptured (gross I know) and I had to stay home to make sure she left it alone and it didn't get infected. So we changed the movie day to tomorrow. But now she just texted me saying she is worried that the dog is stressing me out and asked if she can come stay the night and hang out. I don't want to hurt her feelings but I go into panic attack just thinking about her coming and staying at my house. She has a lot of mental health issues and I just don't want to be around her right now. I get instantly depressed when she tries to pusb into my life so much.