In that story, Barry Allen traveled back in time to prevent Nora Allen from being murdered by the true culprit, by Eobard Thawne, a.k.a. Reverse-Flash. Barry was successful, but the main DC timeline was drastically changed as a result. From what little we know so far about the Flash movie, time travel will factor into the narrative, as will alternate dimensions. So in addition to presumably seeing Nora Allen back when Barry was a kid, it’s also possible we could see Nora in a changed version of the present-day DCEU, or maybe Ezra Miller’s Barry will meet an alternate version version of Nora when he ends up in a different universe.