If it had been 'just' addiction, I dont think Tara would have left at all, but stood by her. What she left for was Willow messing with her mind, repeatedly. As someone said, she feared there would be nothing left of her.Just checked the shooting script of Restless since someone mentioned it earlier, and allready there you can see Willow's fear of loosing Tara if she's just nerd-girl like in the start of the series.
(buffy has just ripped of Willows dress showing that she has underneath the same dress as in the very first episode of the series)
She sits behind a desk and we see the class is in fact filled. Among the students, all of whom eye us with contempt, are Xander, Harmony, Anya, Oz and Tara. Oz and Tara lean in close to each other, as though they've been whispering for some time.
HARMONY
See? Is everybody very clear
on this now?
ANYA
(laughing)
Oh my god! It's like a tragedy!
OZ
(to Tara)
I tried to warn you…
Tara smirks, leans back in to Oz.
Edited again to add (and yes, I have spent all day reading W/T parts of shooting scripts)
this is from Crush in ses5 about the hunchback of notre dame.
TARA
No, see, it can't end like that, 'cuz
all of Quasimodo's actions were
selfishly motivated. He had no moral
compass, no understanding of what was
right. Everything he did, he did out
of love for a woman who'd never be
able to love him back. Also, you can
tell it's not gonna have a happy ending,
when the main guys all bumpy.
now that could in large parts fit very well with both some of Willows lack of direction, and the whole B/S arc, wich really startet in this episode where she's made aware off his feelings.
[This message has been edited by Lanfear (edited March 07, 2002).]