Is AUTHOR wrong in the post ? POST : This will be a short one folks as I'm still at work and mostly venting. 

So my mom had surgery today to install a plate in the base of her skull. My mom has a very bad history with routine surgeries going wrong so needless to say we were all a little nervous. My wife is very close to my mom and my sister called me about 20 minutes ago to let me know she was out and heading for recovery and I asked her to call my wife to let her know since I am at work. I almost immediately get a text from my wife saying ''I am your wife, not hers'' and when I call her to try and explain she simply says her feelings were hurt and she didn't want to talk to me. 

AITA for having someone else notify her since I was too busy at the time to call her myself?