I could be wrong but I don't think Peter changed that part of the story. When you first get Katherine to send spoofed messages and she asks for the phone numbers you have the choice to call Vickie or Rachael. If you go with the Rachael route you can't go back and send a message to Vickie also. You are pretty much forced to use the other item to call Vickie.
Correct me if I'm wrong Peter980, I have missed some of your added details in the past.