@boyan-sharic yeah, that didn't make sense to me, either. Just because they destroyed the wormhole it doesn't mean that Pria would automagically disappear. She'd continue to exist, trapped in The Orville's timeline. But Charlize Theron would probably be too expensive to keep as a regular, so they got to let her go ;)
@misnomer Something like that.
Making her disappear is actually more problematic from a temporal mechanics perspective, since implying that Pria no longer exists in that timeline also implies that she never existed, which means she couldn't have saved the Orville from the dark matter storm, and therefore they couldn't have destroyed the wormhole, and so she actually should exist in this timeline after all.
In short, it's a most ingenious paradox. It didn't have to be. They could have had her not disappear, but dropped her off at a Union base as originally planned, before they knew she was from the future.
Shout by inside83BlockedParentSpoilers2017-10-09T02:52:21Z
Can someone explain how come Pria disappeared?