How do you interpret the movie Black Swan?

how I see it is that she was rollin so that means she was trippin on ecstasy which causes you to have hallucinations and i think that's where the bit about her imagining the ual encounter comes in. And for the "sweet girl" part it was certainly referenced throughout the entire movie and a prominent monent was when all of the paintings in her mom's little studio were all screaming out "sweet girl" and so i think that it was just to key you in on the fact that what was happening wasn't really in fact also the way that lily's wings tattoo were morphing and changing was also part of that. I think the begining of the movie and the way she helps her dress and get ready for bed and share these sorts of things isto show you how close they are and the point of that is to show you how much the role drives them apart as she seperates from sanity or reality as the movie progresses. I don't feel like the relationship between her and the mother was really an uous relationship, but really you're plain old overbearing, overprotective, "don't make the same mistakes i did" deal. but i do see what you're getting at and it is easy to also see it that way.