Board Thread:Spoilers!/@comment-5094906-20150510215812/@comment-25926288-20150512031226

It's just a broken cycle of sacrifice: Hook sacrifices himself for Emma, Emma sacrifices herself for Regina.

The way it is painted (regardless of fans and their respective ships) is that Emma sacrificed herself for Regina due to their budding friendship and bond with Henry and her job as the Savior.

It's not to say Regina doesn't sacrifice for Emma (She gave a parting gift of nice memories in 3a), it's just that she's never given the chance because every thing comes after her. (Though she did try to distract the Chernabog towards her.)

Regina should not ignore the Emma plot because that'll be illogical. Emma is Henry's mother and Snow's daughter and her new friend/frenemy and to ignore that would be idiotic. Emma's story is the main plot, so she should be involved in some capacity. She may be involved with the Lily subplot and her Zelena subplot as well.