Hmmm... That could work too. She could make sure his power-suppressing cuffs didn't work, then he could do the same for hers if she was also cuffed, so any escape plan would be much easier.

And yeah, she could easily play wanting to get this 'threat to both their groups' out of the way, and bring him in as a sort of 'peace offering' to get her foot in the door in order to at least let those in charge hear the Voidtreckers side of things. Because even if they still think the VTers are bad guys, she'd definitely at least want to tell them 'look guys, whatever trouble we've caused in the past, this isn't our doing; we're as stumped and as stuck as you are. how about we put our heads together and see if we can stop this before it goes too far?'