Hell, I'm known for being blunt to people's faces and I kind of lost my own best friend when I decided to tell him exactly what I thought of his decisions and his life. Didn't go too well, all things considered. Now I'm out a room-mate and all.
I can't say that it stopped me saying what I wanted to say though. Turns out I'm kind of an outspoken ass that way.
I guess I'd say wait for the day she realizes it, and be the first to say I told you so. It's not exactly nice, but then again, it's satisfying.