Noooo! I know how you are feeling, but don't make any knee jerk decisions! It will be a long road, and most likely you will discover more lies before it gets better. Bring the gift card up in counseling and let her know it hurt you. Don't fly off the handle, it will only serve to convince her that YOU have not changed.
Our counselor recommended a book titled "After The Affair" for my wife to read. She was sobbing after reading the first part of the book- it really made her see the depth of the pain she had caused.
At the end of the day, however, she is a WAW, and the affair was a result of pain that your W felt for years. It's hard, I know, but most of the effort for a long time to come will have to be from you. Part of that effort is maintaining an even keel.
I wish you all the best, and pray that you will be a success story on this board some day.
