If you watch the TV show, The Flash, then you may have seen last nights episode. She did not die like it may have foreshadowed in the trailer.
In the original comics, Patty only showed up for a little bit and she continued to have nightmares of a accident that occurred when she was a kid and she drowned to death, and was later brought back to life.
So is it possible that Zoom may take Patty before she leaves to go to the school of her dreams? It would not be the first time that the show has gone off from the comics. Zoom could have her in danger, and Barry shows up to save her, but he is too late. And that could be the big dramatic thing to happen at the end of season 2.