I just made a good long reply to a post on how LG15 is a coming-of-age story by way of Crowleyan Thelema (or what I can garner from it) here:
http://lonelygirl15.com/forum/viewtopic ... 795#132795
Ok, I'm no expert on this (so everything here is by way of Wikipedia), but according to Crowley, the Law of Thelema can be summed up as :
* "Do what thou wilt shall be the whole of the Law"[24]
* "Love is the law, love under will"[25]
* "There is no Law beyond Do what thou wilt"[26]
Which is a mandate to discover and manifest one's True Will, which he described as one's inner divine nature, spiritual destiny, or proper course in life.
So anyway, from what it appears, the Order/her parents/all that is powerful in Bree's life have controlled all aspects of it up until a couple months ago. She was confined by her homeschool seclusion, her parents' strictness, her religion--which seemed like it was one of those all encompassing ones that have camps and communes, etc. Despite being an obviously intelligent girl, she never acted/made big decisions as expressions of her own free will.
This is evident in the earlier videos, which nearly all take place in a box (i.e. her room), and all her decisions are her parents' decisions for her, despite her own self wanting something else.
The catalyst to her changes is Daniel. Due to pulling power of their brief relationship (i.e. Love), Bree begins to challenge her parents/religions' impositions on her free will, declaring at one point: "If I want to do something and my parents say no, I'm going to do it anyway" (paraphrased)
After choosing this though, Bree (as a girl) has to deal with the consequences of the expressions of her will, as well as the continual challenges to her expression of it.
I think Daniel's role isn't so much mandated by someone In-Series (i.e. Tachyon's organization, Bree's dad, etc) as out-of-Breeniverse symbolic of themes presented in the story as a work of fiction. He represents the power of love as a draw/impetus for Bree to begin/continue expressing her will.
Since Daniel is the catalyst for Bree's journey to discover and manifest her True Will, as per Crowley, it only makes sense for him to be Danielbeast. Even though that is supposed to be her religion already, but I think somewhere along the way her religious organization lost track of where it came from and became this sinister, all-controlling entity. Bree is in some many ways the ultimate manifestation of the will-suppressing horror that it has become (a nearly-manufactured child ordained from birth for use in something in which she will have no control). Her embarkment on a journey that was the original intention of her religion by way of Daniel makes sense for him to be The Beast.
