On the ymmv page for Obi-Wan Kenobi, under "franchise original sin" it calls into question Reva being able to survive a lightsaber stab through anger, despite also acknowledging that Maul survives a similar wound (actually what he survives is worse), because she doesn't "have the requisite training"

I'm gonna have to say it aren't I?

Surviving a stab wound (something normal real world people can survive, seriously spend some time looking up incredible injury survival) is not something you need "training" for

What you need is anger, that's it

Anakin didn't have "training" (because he'd only been a sith for a day at best) yet he survived his immolation, because he was angry enough

And Reva certainly had the anger

Anger at herself, anger at Vader, anger at Obi-Wan, and thanks to the communicator with the message from Bail about Luke, she had an outlet

Not to mention the fact that Kenobi previously set a lightsaber stab up as a survivable injury

How?

The grand inquisitor

By stabbing a character who we know survives (and also he shows up to mock Reva just after Vader stabs her), Kenobi foreshadows that Reva could survive a similar wound (plus as we see from the flashback in the same episode, Reva herself has already survived a similar wound once)

But of course that just went over people's heads

And then Vader. Literally. Tells Obi-Wan. "Then you will die." When he says. The same exact thing. To Ahsoka. About five years later.

FOLKS.