I don't think the devs forgot about her.

Hell, we may even get some resolution on her before you know it. Yoshi-P recently said that players should refresh their HW knowledge for upcoming story stuff, and since presumably he isn't talking about Ishgard since that's all pretty well in hand, presumably he's talking about dragons. And aside from the ones we just haven't met yet, the only one of Middy's brood who still is an open thread is Tiamat.