User blog comment:Eobard95/Arrow Season 6 - How it should be/@comment-3221148-20170818205130/@comment-26624146-20170819043224

They've confirmed there will be some flashbacks revolved around other characters and Katie Cassidy is a main cast member this season so clearly they do have plans for her outside of just fighting Dinah. As for my "obsession" I just think she's the charater with the most story to tell at the moment and the writers would be foolish not to exploit it.

As for Zoom I've always thought there was some personal connection between him and her as he always kept his identity secret to everybody on Earth-1 and Earth-2 yet not her. When introduced in Flash 2x22 she talked to him with the mask off like she'd known who he really was for some time.