Is this going to become commonplace?

I have recently mentioned that Kate has taken different items of clothing with her when we have gone out. She hasn’t done that for a week or so, but that changed this afternoon. After enjoying sitting by the fire, working on her iPad, and listening to music for close to an hour and a half, Kate was ready to go somewhere. We are now at Barnes & Noble.

When we had gathered the things we wanted to take with us, I saw that Kate had her heavy red velour bathrobe and a pair of shoes in her hand. I didn’t say anything. I just waited to see if she planned to take them with her to the car. She did. I still didn’t say anything. As we started to get out of the car at Barnes & Noble, she used her normal hand signals to ask if she should take the robe and shoes in with her. It was then that I suggested that she leave them in the car. She accepted that without comment. I’ve added this to my growing list of unexplained mysteries.