She passed away far too early.

Bibian Banshee would have had much more to explore as a character if Dina had lived on as Bibian and Mockingbird's rival. She could have appeared in events or later parts of the story.

Now, Bibian Banshee will forever be reduced as the Phaeton stalker because her story is basically over.

Mockingbirds don't even have a reason to exist anymore. They should just be merged with Victoria's Secret agency.