no, i say karin due to spiky hairs...once again, Hinata hasn't any spiky hairs... her hairstyle is identical to those neji's, like all hyuuga members LOL
You must concentrate on those who has spiky hairs... Karin housewife is hard to think even for me LOL
and that boobs are too flat to belongs to Hinata... Even Hinata's boobs are smaller than Tsunade's, she still have big boobs.... So, no big boobs and spiky hairs = she is not Hinata at 98%.
not trying to discourage you but...

hinata's hair is not always squarish at the ends,it can become half squarish,half spiky when she is flipping her hair..the girl from the sketch also has hair strands framing her face...karin doesnt have those two framing hair strands ,she has her hair spiky on a side and neat and straight on the other side..also the woman does have boobs look at the curves..hinata's are not far from it..karin has very small boobs,even smaller than sakura's..it has 20 % chance to be hinata,60% chance to be sakura,1 % chance to be karin(since neither the haircut and the body resembles,not to mention karin is hard to be imagined as a housewife),19 % other character
also,if thats hinata then it doesnt mean that naruhina is canon..maybe other hinata pairing became canon
im trying to say thats no chance to be karin,hinata has bigger chances than her,but if i was forced i would still bet on sakura..it can also be sakura since sakura had those two framing hair strands like in part 1,hair spiky and light ,and maybe theres a chance her boobs are grown in the movie..shes only 16 after all