That message may just be buggy - I got the one from Ashley, and I played a female who let her die!Another poster over there says that people using the free Mass Effect Datapad app for iOS are receiving an odd little message from the Virmire Survivor after completing the game.
(I did start ME3 with a male Shepard who let her live, but that character never got off Earth...)
On a different note, does anybody know where I can find the beta leak? I deliberately avoided it at the time, but now that I'm trying to find what was leaked I can't find anything...