Take her to the show.
If she doesn't wanna go, and she doesn't want you to go... then get fuckin' rid of her if she's that selfish. Tickets cost money, you spent that moolah on those tickets, and you fuckin' wanna go to this fuckin' show!
To every girlfriend and boyfriend of every Gn'R fan: Don't be selfish, let your spouse go to the goddamn show and don't kick up a fucking fuss about it! Its not that huge of a deal! Your partner will take you to dinner the day after or before! Its not a problem!
Dude, tell her that the best anniversary gift she could give you would be letting you go to MSG.
Sorry if I seem a bit vehement.... I just don't get why girls get all assfaced over an anniversary. Big fuckin' deal! So its one more year! Yea a bit of mushiness would be in order, but nagging and nagging and being selfish over ONE DAY is just fucked up and is a sure fire way to getting dumped.
YoungGunner: Go to the show. No matter what. If she dumps you, hey at least you'll be seein' Gn'R and you might meet a hot Gunner chick who'll go to shows with you!