Wow, what a tough call.
I think I've devised a plan though. You should buy her all the Phillies and Mets gear that you can and whichever team that is ahead of the Braves in the standings, watch that game and cheer for them. If the curse holds true for the Braves, perhaps it will work for the other teams as well. I mean what could be better than to hear her singing "Meet the Mets, greet the Mets. . ." if you know that its going to lead to a 9-8 loss to the Pirates for the Mets?
Or better yet, you could pick your timing. Let her cheer for the braves as long as we can keep in striking distance, and then have her stop the last month or so of the season. Thus the Bravos could string together some non hexed runs and breeze past our 2 nemesis (or is it nemesi ?)
By all means though, come playoff time, if our bravos are around, leave the country. Take her on a vacation for the month of October to another country far away where they don't have sattelite and so you can't watch the Braves. Then secretly get vcast or whatever on your cell phone so you can keep up with the action without her knowing.
The last option is to begin practicing VooDoo together, and start making dolls of all the mets/phillies players and sticking them with pins.
Actually, I've heard that the cure for this is to take a Mets mascot doll, and a Phanatic doll and bind them with 7 hairs from her head, then hang them from a tree limb and hand her a baseball bat. She must hit them 9 times - once for each inning, then run counter clockwise around your backyard like she is running the bases 3 times (once for each out) while doing the chop and chant. For your own pleasure you could let her know that thie above ritual MUST be done without clothing, or you could also substitute braves garb (sorry if this crossed the line, but I thought I might help the relationship along . . . 
) Once she finishes the bases, a night of snuggling on the couch watching old videos of great braves moments (the catch by Otis Nixon, Andruw's spiderman catch on the wall, 3000 k's for Smoltz, the World Series win, and lets not forget the slide by Sid Bream), should break any curses and or convince her that you are truly a loon, and force her to move on, thus also breaking the curse.
Anyhoo. Pick your own way to break the curse. Personally if she's hot, I'd try the last option and try to persuade her to do it without the clothing. You might want to make sure you have a fenced in back yard, since many neighbors don't approve of rituals like these done in their communities (stupid Mets spies everywhere!!!) Oh, and bobble head dolls of Reyes, Wright, Utley, Rollins, Burrell, Howard, or Santana can also be used to replace the Phanatic/Mr. Met dolls in the above ritual.
Hmmmm. I just had a thought that if you were nearing proposal time you could always hide the ring in a Met's logo pinata, and make her beat the crap out of it to get to the thing. Of course if she was a true braves fan, she might hit the Mets pinata so far that you might not find the ring again - . . . but I digress.
Oh, and make a video of the above curse breaking ritual (you can leave out the snuggling on the couch part) and post it somewhere where we can see if it worked! 
Er, unless you chose the part without clothing - in which case you might not want to post that - girlfriends are a bit touchy about those kinds of things I"m told.
Go Braves '08!!!
