It's obvious to me from the tone of your post and your description of events that you are/were a pretty considerate guy.
Starting up a single-pitch route when the team ahead is not yet finished would generally be pretty annoying because the first team would have to rap on top of the second team. However, in the case of Karate Krack where the rappel does not go down the route, this is no big deal. I don't think you did anything wrong, but if the woman seemed nervous/scared on the climb (shaky follower), I probably would have given her more space.
Congrats to your wife on her first 5.10 trad lead!!