Lovinglips
If you have done all those things and explicitly
told her how important her pussy is to you and how much it would
upset you to lose those lips... and she STILL wants surgery, then she
has deep rooted issues about her pussy or there is physical
discomfort from having her lips...
Some kind of counseling is one
option, unless it's a physical complaint she has.
If she
won't talk to you openly about why she has a problem with her pussy,
maybe you can encourage her to talk with one of the well endowed
ladies here who have learned to love their lips.