After watching Twin Peaks FWWM for the second time and after seeing the majority of the series I have had much more sympathy for her this time around then the first time. I guess it's her big green expressive eyes full of dread and shock that she displays whenever her father Leland gets into one his BOB moods and accosts her or whenever she is having a freak out (which let's be honest her whole life at that point was a freak out).
My first impression was that she was a spoiled and selfish little b*tch that went around used people to get whatever she wanted, and while it is true that she did use people like Bobby upon re-watching the movie I believe that even while in complete dread of BOB she tried protecting those she cared about such as Donna (she freaked out when she wore her jacket, I think because somehow that way BOB would find out about Donna through the smell or something), and she broke it off with James I believe that was also a way ti save him from her downward spiral.
I think in any normal (normal being operative word here) dysfunctional family (it also didn't help that her dad was a complete nutter), the teen would go to rehab, get off the drugs, and the family would endure group counseling to overcome their grief/problems. But since this particular situation was far from ever being normal that was supernatural the only way Laura felt that she could get away was to indulge in the vices. I don't necessarily believe that the Lodge spirits forced her to do these things, I do however believe that they were plotting and conspiring to have her join them but I think they (BOB) would have tortured/molested/raped her regardless of the lifestyle she was living.
So in retrospect I felt sorry for her because she seemed liek she really truly was trapped and since there was no other way out that she would just endure whatever there was to come until her death. i don't think that she ever intentionally meant to hurt those close to her, I mean even if BOB wasn't in the picture you have to figure that Leland was messing around with her so she would still be pretty messed up and need to want to find an escape from it all. I was also curious as to why Sarah never suspected Leland of doing anything, she seemed pretty concerned/frightened by his behavior at the dinner table and had noticed Laura's moodswings but never said anything. If things had gone differently and Sarah interjected, could Laura have been saved? Thoughts? Opinions?