She can, and she does.

I can feel Kathryn trying to concentrate on going back to her own body. After a short while of that approach clearly not working, she leans down to plant a kiss on her own lips. I feel a jolt going through both of us as she opens her own eyes again, which emit an intense purple glow for a moment. I exhale in relief as I notice that I can move my own hands again.

"Wow, that was quite a thing. I'm sorry I didn't leave immediately, but--"

"I know, it's fine. I would probably have done the same thing in your place. But it gets really uncomfortable not being able to do anything."

"I'm sorry. I'd like to try this again sometime though." She gives me one of her adorable smiles.

"And I'll let you, as long as you give me time to prepare myself beforehand. But how about you try it on someone else in the meantime?"

She looks a bit skeptical at that. "What if they can't handle that though? I know you trust me, and you know I wouldn't do anything bad with your body, and even then you had a horrible time not being able to do anything. What if this is just a complete nightmare for someone else? As much as being in another body turns me on, I wouldn't knowingly do this to anyone." She frowns.

We are interrupted by a notification on my phone. I read it aloud to Kathryn. "It seems you figured out how Kathryn's new Mystery Bonus perk works! Congratulations! Additional awareness information: If awareness of the possessed subject is turned off, they will stay conscious during the possession, and rationalize anything they do while possessed as being their own choice. Have fun with it! Jen". The message is signed with several grinning horned emoji. Checks out.