Am I the only one who thinks this is actually Regina, and not Rumple? I don’t think she wants to turn Emma dark, but instead use Lily’s blood because of her having Emma’s darkness inside of her. I think the whole Zelena pregnancy thing is making Regina act desperate. Plus, we saw Regina working with Isaac in the promo.
While Regina does want the Author to rewrite her story, does she really want to stack the odds against the heroes now so that the villains win? Regina does seem desperate to get Robin Hood back, but does she really want to jeopardize the Charmings and Henry to get her happy ending now? Also, I’d say Robin Hood is still in the hero camp, so it seems like he’d be on the losing side if the savior goes dark. I would’ve hoped Regina had made more progress than to jeopardize her future with Henry. Also, the way Regina says to Lily that she really is fully of darkness just really sounds similar to what Rumple said to Regina in S2 about resembling Cora. Rumple loves to bask in others’ darkness.
"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy