Board Thread:Spoilers!/@comment-26620090-20160511134737/@comment-26443838-20160511141915

Eskaver wrote: Regina obviously sounds like she isn't reverting because she says that she fought her dark impulses because she knew it wasn't the right thing to do. It's pretty much likely that Regina will be fighting those dark impulses throughout the finale.

I'm pretty sure Regina won't murder anyone. Or at least anyone relevant. She's on good terms with everyone and she's not killing Hook. Thus, there's noone for her to kill. Not according to the spoilers and teases, she may not. And we shouldn't expect her good terms to last long.