Lesbian Heroine?

It seemed to me pretty clear that the heroine was a lesbian. She starts off riding in the car with two women who drag race men, she tells the doctor repeatedly that she has no interest in men and never has -- and keeps away from her lecherous neighbor, she's more than willing to have her landlady come in when she's half-dressed, and there are lots of other little clues along the way. I saw the dance at the end as being about her being sucked into zombie-ish heterosexuality -- and running from it.

After watching the interviews with the writer and director, I was surprised that no one said anything about that (even though Kansans might not use the word "lesbian" out loud. :-) ) Am I reading too much into this or did other people think this too?