[@SouffleGirl123] I'm sorry, I should have tagged you. I posted. 

So, since Audrey's power works involuntarily on touch(we're gonna say it has to be skin to skin), and since she takes a diminished version of their wound, she and Sam would create a feedback loop if they touched each other, completely healing both(and exhausting Audrey). 

Of course, I think Sam's power is one of he hardest to figure out.