Yep. The same Reva.
The show was very clear that despite being driven to kill Vader through any means necessary, when push comes to shove she isn't always able to follow through if something triggers her childhood PTSD. Obviously she had no trouble staying in character when an angry Karen started mouthing off to her in public but she couldn't kill Luke and she was obviously all talk with Leia as well.
"Okay kid I'm gonna torture you now so you better talk! I'm pushing the button now...!" *Leia still doesn't talk*
"Okay I'm really gonna turn this thing on!" *pauses* "I'm serious! Not bluffing at all! Here it comes!" *Leia still doesn't talk...*
"Son of a...you're bringing this on yourself kid! I'm warning you...! *still won't push the button*
"My lord someone is calling you, she says it's urgent."
"Oh thank God okay I'll be right there." To Leia: "You got so lucky because I was totally about to do it..." lol