I wana see her wrestle with Rey Rey in a slave outfit.
It's not at all implausible in the Star Wars universe. That's not the problem. The problem is that a pivotal plot point (Poe escaping the clutches of the First Order) is taken halfway, and then we leave it completely. It's as if the escape of the Millenium Falcon from the Star Destroyer in ANH was abruptly cut from the Ben Kenobi skulking around, to the Falcon landing on the Rebel base, and then we are told. "Oh, right, Ben Kenobi died, but we managed to get off the Star Destroyer. It was dicey for a moment." then yes, that would be a huge WTF moment. Yes, in the SW universe, more implausible things could have happened in the meantime, off stage, but they are not part of the narrative unfolding onscreen. The first stanza of the movie deals with two things: 1) Finn defecting, 2) Poe being captured and then escaping. The second is given zero resolution other than "Oh yeah, he lived".
Darth Vader being spun out into space, that was the conclusion of that particular action, at the end of ANH. Same goes with Captain Phasma's summarily being toss into a trash compactor. That action, we rightly assumed, occurs off stage in BETWEEN movies. If either had happened at the beginning of the movie, and been big parts of the plot, and then the characters appear again during the same movie, with a throwaway line of dialogue, then yes, that too would have been bad storytelling.