Yes, I went into my local AAA office & they added her on the spot.  I believe they can hand you the official title at that time but since my car was up for renewal I had to wait for the title.  They did however hand me a receipt and I was told that it was a legal piece of paper showing her added on to the title.  Not sure if you have the title in hand or if that makes a difference but I did have my title with me.

Hope this helps. 

Pam