Interesting premise, with a number of believable and realistic elements. I liked the gathering of wild foods and hunting for meat, as well as how much the girls relied on their parents books and learned to identify plants, preserve food, etc. Numerous decisions are painfully illogical and I kept expecting more issues than the characters ended up having.
Then there is the matter of the perpetual state of summer they seem to live in for over a year, and several other inaccuracies you probably only notice if you've actually foraged for food or done home canning. Ending was totally unrealistic, one of the very illogical decisions. Also one girl was not going to carry all that food plus bedding, books, and tools on her back. For one thing the jars would break.
Overall very disjointed. I do feel it depicted real things people would go through in such a situation, and the acting was good, but the plot was not well thought out.
As far as the 'incest scene', what I saw was indeed that one sister hurt her back and was getting a massage from her sister who, as a trained dancer, probably has some experience. One reviewer mentioned that there was a scene which was cut, I don't know about this or if it was in the book which I did not read. I am very disappointed in the viewer for repeatedly focusing on 'lesbianism' when the real issue seems to be incest. And for your information, the scene appropriately warned of in the CSM description involving a loving couple was the younger sister and her boyfriend. If there was an incest scene and it was cut... this site wouldn't be referring to it now would they?