You've made the right decision. If you were to leave it alone it would haunt you and you'd eventually have to have it removed anyway. 5 years ago the lump in my breast wasn't cancerous but all I could think was get it out! Leaving it would have driven me crazy.

Try to be positive. You will be able to get her to/from the vet. She will do fine and will be just fine afterwards. Believe. You can do this!!