BUT EMMA DOESN’T LET GO OF HER ARM YOU SEE
Oh god, are they dancing???
Look at the difference in how Emma approaches Regina..
She used to be pretty violent & angry..this was neither.
Emma is just trying to stop her doing something dark when she realizes it’s unnecessary. She just holds into Regina until Regina stops fighting, then reasons with her. Emma didn’t take control from her, she asked for it. Something else no one has done for Regina.