I became a full-fledged feminist after first seeing this movie!
Sure, I was an impressionable adolescent, but I found that I identified so closely with her, what other position could I take. I think that was when it was on TV the first time in the early '70s. I saw it again on Lifetime in the late '80s. Last year I was trying to describe this to a friend and complained That I couldn't find it anywhere. Netflix and even Amazon didn't have it. Then I thought of somewhere I hadn't checked.
I bought it last year in Apple iTunes Video! It wasn't expensive either!