My wife had the same reaction to her first DP. When she realized what was about to happen she begged me to make them stop but I told her that she needed the experience and that I knew she was going to love it
Exquisit to see how in the beginning she blocked but in the end she cannot resist this special feeling getting fucked by two dicks at the same time! I made that experience with my wife, too: First she was not happy but the force of two pumping dicks - no chance.