I'd be pissed, but, then I'd get over it. At 27 you're a big girl now so birthdays aren't that big a deal, but, forgetting to mention it when she's on the phone...you're correct to be pissed. I'm a guy by the way, and I know you gals do things a little different, but here's what I'd do. Forget HER birthday. Treat it like any other day of the year. See how she takes her medicine. I love powerplays, they work! Forget her anniversary or whatever...Thanksgiving damnit if that's what it takes to prove a point. Any important date coming up you'd like to forget? This could be kind of fun...