ok, I'm writing my friend an email as a prank... she recently had jaw surgery and i'm posing as the doctor... how can i make is sound realistic and how should i sign the email? Here's what i have

Annelise Gartrell:

I am emailing you concerning your recent surgery; I am sorry to have to tell you this, but after reviewing the procedures taken to put you on the track to good health, we realized that we made a mistake in the operation.

Someone will be calling you in the next few days with details, and a date as to when you are strongly suggested to come in for correctional surgery. We are sorry for the inconvenience, and assure it will not happen again.

Thank you, and have a nice day.