Knowing that the gods can be killed -- as she had arrived when only three of them were still standing -- is certainly helpful. She knows that they aren't invincible, and Sorrow seemed to express some concern in regards to the maser from her world. That has to be worth something.

"Wouldn't call them puppets. Just not omnipotent in that even they are limited by things that are beyond their control. For instance, it's possible to fight or be unaffected by their influences at all when they decide to fuck with your head for a few days."

Something Rey was more than grateful to exercise when Rage almost made her kill a kid.