I was extremely careful not to read any spoilers before I saw this movie, which is just as well because it's VERY spoilery. The one thing I did see beforehand was part of a review that said Jane's role was mostly to "faint on cue", which made me rather apprehensive. There's probably going to be a lot of debate over this among fans, but I personally thought the depiction of women in Thor: TDW was very good. If Jane had been the only female character, I wouldn't have been pleased by the fact that she fainted a lot, but there are four women in this movie (one more than in The Avengers, which had a far larger ensemble cast), and each of them has an important role in their own right. On the simplest level, this is how representation works: the more women you have in your movie, the more leeway you have to let one of them be "weak" -- whatever that means.
Jane's
characterisation is very solid thanks to the first movie, and I appreciate
the number of publicity interviews Natalie Portman has done where she
talks about strength of character vs. the concept of "strong
female characters". Sif is a warrior. Frigga is an witch and a
diplomat and a mother, who can fight if she has to. Jane is brave and
curious and smart, but she's not a fighter. Darcy is independent and fun
and "normal". All four of those characters are "emotional", but not in a way that's coded to make them seem hysterical/weepy/stupid, which is often how some people interpret "emotional" female characters. A female character who faints a lot sets off alarm bells
because we associate it with swooning damsels in distress, but a female
character who has no weaknesses is a more insidious problem. I suppose
they probably could've done better than Jane being Maguffinised for half the movie, but I think it worked in the context of her being the mortal girlfriend of a near-indestructable alien, which I can only
assume will be the primary conflict in the Thor/Jane romance storyline in any
potential sequels.