Yeah somewhat, but still not a heroine. Although if pein/nagato didn't revive everyone it would have been better for her. I sort of feel she was more like a heroine, because she was known for something-greatest medic or something, while also being the only female hokage. As for a character, her development is pretty good, considering how kishi either writes women off with either pregnancy or benched them into irrelevancy. Tsunade had a lover, nephew, background with gambling (lol legendary sucker, didn't this tie into Hashirama?), trauma over the lose of her nephew and lover and then she overcame it, had some good dialogue against madara and during the war, and some other things. TBH tsunade is probably the best female character in naruto in terms of character imo