They probably didn't want to call her as "Angel Salvadore" or "Angel" to separate the Angel that we saw in X3. Anyway, they should have called her Tempest in FC. I didn't like how they called her Angel like as if there wasn't an Angel in the previously released X-Men movie.
Originally Posted by Krak66
I think Emma and Riptide didn't participate in that ambush. Or when Azazel and Tempest were killed they just run away, maybe even to another country.
Emma has nine-lives. Next time she'd pop up in the next movie for some reason. Anyway, they should have included her in this movie.