Awww, Mimi will be fine (easy for me to say). I was a nervous wreck when Hot Rod was neutered. I waited for the vets office to call me with an update and got really anxious and wound up calling them. Well, my cell phone somehow was on vibrate so I hadn't heard it. All went well and I was right there to pick him up when it was time. Good luck and hugs. She will do great.