I want to book a Delta flight for me and my wife for a surprise Christmas gift. We both have skymiles accounts and I would obviously book the tickets using both of our skymiles accounts and TSA numbers on the tickets. However since it is a surprise trip, I am really worried about if she will automatically receive some sort of email notification about the tickets since her ticket would be booked with her skymiles number? I don't want her to find out until Christmas so it is important that I know if she will be emailed with our reservation and if she will be notified in any way about the booking?

Thanks for any help!