That would be nice! My phonegame sux, and I get flakes pretty often. But coming to think of it, its probably what I do first meet that is causing flakes, rather then following phonegame... so my entire game sux
I have found though that being pretty aggressive in calling her, with the right frame, seem to help. Waiting a few days will just make her colder.
Looking forward to that anti-flake-guide.