I watched the show but something didn't smell right to me.
The point at which I really began to doubt the story was when the mother was reading a good news bible, why would she not be using the NWT if she was a strict witness?
Reading between the lines the bullying the girl received had more to do with her being a lesbian. The bullying seemed to be the reason for removing her from school rather than because her parents were strict JWs (bearing in mind home schooling is pretty uncommon over here even for JWs).
The girls parents seemed to be very reasonable allowing her to do tae kwon do tournaments and go to parties (although granted it could be this was influenced by the presence of the film crew) There was no indication of strict meeting attendance and field service in the course of the film, and the film did little to explore how restricted Megan was by her parents. Overall her parents came across as being more than reasonable given her age and Megan's complaints would, to someone with no knowledge of JW life, seem like the complaints of a very average teenager.
My impression was that this was little more than a puff piece that didn't explore the real issues associated with being raised by strict JWs.