Uhhh, I–well, I don’t know if you want to be spoiled without watching it for yourself, anon? If you know the premise of the Terminator movies, with the time travel and all, you can kind of figure out how the two things reconcile?
If you really want to know before you watch, I’ll put it after the cut below so you have the chance to decide for yourself if you want to read:
Future Grace, who has traveled back in time, dies. But we see at the end of the movie, Present Grace still alive, as a kid, and Present Dani vowing that this time she won’t let Grace die for her, with the implication that the future CAN be changed and they have multiple chances to get this right and this time Future Grace will continue to live. I actually have a lot of thoughts about this but–you should watch first, heh.