I think that depends on what version of feminism you're using. By the 'independent woman who makes her own decisions' definition, she's not a feminist model at all. By the 'woman treated exactly the same as a man' metric, she's very feminist.
Fair enough, mind you, that does imply that Fury is a great boss for that sort of thing. Seeing as in 616, S.H.I.E.L.D. was his baby to begin with.
Although personally, wanting to follow orders of a person she believes is worth following, is pretty much as feminist as you can get to me. It wouldn't matter if Fury had been a guy or a gal, in that regard. But meh. I loved the film.