User blog comment:TheDoctor230/My Final Felicity Prediction/@comment-26537965-20170908150222/@comment-27673963-20170910110000

Lol she was never confirmed. Guggenheim said 1 comment to someone on Twitter and that is the only thing confirming her to be alive.

Your point isn't a confirmation that she is alive. That could simply be a continuity error that they missed.