Nancy has been compared to Kate Drew on several instances in the season; that she looks just like Kate.
Well, now we know that Kate isn't Nancy's biological mother.... but could they be related some other way? Is Kate actually related to the Dodd/Sable family some other way? ...Or is Kate another lost Hudson? Something that could make Nancy look somewhat genetically similar to Kate.
It's funny that Patrice compared Nancy to both her mothers on two separate occasions.
(I'm hoping this isn't a plot hole. I hope it's addressed eventually.)