I have a rule. I rate documentaries with:
7 if it is great.
6 if it is good.
5 if it is less than good.
The reason is: Docs have lower ceilling and higher floors, because they are all at least an extensive view/opinion on something (even if it is morally or factually wrong), and at most they are all edits of real life (no matter how long the doc is and how factual it is, there is subjetivity and therefore not the real thing).
This one is pretty straight. Its fine. It informs you of the situation, more or less. And that's pretty much it. There is no doubt about the situation of the girls and the reasons behind what they did. Its a proffesional job of an interesting story, but there isn't much more than that.
The reason is: Docs have lower ceilling and higher floors, because they are all at least an extensive view/opinion on something (even if it is morally or factually wrong), and at most they are all edits of real life (no matter how long the doc is and how factual it is, there is subjetivity and therefore not the real thing).
This one is pretty straight. Its fine. It informs you of the situation, more or less. And that's pretty much it. There is no doubt about the situation of the girls and the reasons behind what they did. Its a proffesional job of an interesting story, but there isn't much more than that.