I'm sorry you're so worried. We all do it, though. After all, they are our babies. Will someone be home with her after you bring her home again? My vet does same day surgery, where you take her in of a morning and bring her home in the evening. I never put anything on mine afterward, but some people do. But, then again, she had internal stitches, not external stitches. Try not to worry. They don't feel well enough the first night to do anything anyway, as a rule. However, mine was ready to start playing a little bit the second day. You can't keep a healthy yorkie down for long.
Just don't let her jump. Best of luck to you.