She'll be fine, don't worry! My little girl was spayed at the age of 4 months and did wonderful. I don't have experience the the body sleeve though. I would just say to take it off morning and evening to brush her. Spice also just had her two upper canine deciduous teeth removed about a month ago. No problems what-so-ever! It took her until morning to be herself. Such a tiny little dog (3.6lbs) and anesthesia keeps them pretty groggy all day. She'll do great...