Betray? Let's not be so dramatic.
I think using the word betray is a bit overdramatic. There are certain aspects of the movie that do go against what I think of as feminism, but the overall attitude and theme of the movie seems in line with feminism to me. First, my definition of feminism includes the basics, like equality in the workplace and home. I also see feminism as a concept that affirms a human’s (woman’s) basic right to make her own choices and go her own way.
One scene that I think of as against the idea of feminism is in the beginning of the film, when Thelma and Louise are talking about getting ready to leave over the phone. Both women talk about Thelma asking Darryl for his permission for her to go away for the weekend with Louise. This part of the discussion isn’t filled with Louise’s usual sarcastic comments about and disdain for Thelma’s husband. Both women seem to accept the idea that she needs permission from him to take a little trip. Even Louise, who I see portrayed as fairly free from masculine influence.