I did it early on in my punting career with a girl who became a regular. After making initial contact via AW, I then emailed her using my punting email account, not realising that my real name, which I had foolishly used when creating it, appeared when she read it. Like the OP, she was as concerned with discretion as I was so it wasn't a problem. Ironically, I discovered her real name by accident as we had mutual FB friends and she popped up as 'Someone You May Know'. It was never a problem for either of us.