See, I think some are missing the point. My point is not that any one theory I have come up with (or others) is THE explanation for things that aren’t explained, but that there are possible explanations and Star Wars has a habit of not clearly explaining every turn and point in favor of the drama of the moment. From just the canon sources (regarding Maul and the Grand Inquisitor), there appears to be some dark force power that they can tap into to remain alive after otherwise deadly injuries. We have several characters run through with a lightsaber (or cut in half) and only Qui-gon dies. No explanation. But in each of those instances, what we see works to forward the drama. Lucas is the one who insisted that Filoni bring back Maul. He was cut in half, that is far worse than being run through. Though you could argue that the saber didn’t touch any part for very long and didn’t do as much damage. But Qui-gon was run through almost as fast and died. The Grand Inquisitor and Reva are run through slowly and both survive. Why? How? The force is the most likely reason. Do we really need all the details? No. Star Wars isn’t big on such expositions. Especially the PT. And this series is very tied to the PT.
The problem here is, that it is the hallmark of bad/lazy writing to just say “Somehow Palpatine returned!”, or “Somehow Reva survived!”. It leaves it up to the viewer to make sense of a nonsensical situation. The fact that Lucas did it too with Darth Maul doesn’t suddenly make it good writing. Additionally, having characters continually survive what should be lethal injuries lowers the stakes, because apparently any character can just be killed or survive based on the writer’s whims rather than pre-established rules of the universe. Finally even if Reva is to survive (again!), the situation is made much worse by the fact, that she walks away virtually unscathed from what should at the very least be a debilitating wound. Whatever you might say about Maul surviving being cut in half, he was left with consequences. It took him a long time to recuperate, and he had no legs.
Virtually unscathed? I suggest you watch it again.
She’s a bit sore and sensitive to the touch, like she has a stomach cramp, so yeah, virtually unscathed.
It’s pretty obvious she needs medical attention and is on the verge of collapse and sheer willpower is what is keeping her going. Virtually unscathed is a false description.