Homeschooling needs better regulations. It should be very expensive and you should have to pay to have officials come out monthly and investigate that you are teaching kids properly to incentivize against it. I have met quite a few homeschooled kids in real life, and every single one of them have subpar educations among some of the worst social skills and attitudes imaginable.
That's not even the worst part though, when you spend all your time with your parents, you end up soaking up their extremely biased and usually irrational beliefs. They get ingrained in you from such a young age that some people will never be able to break away from that type of thinking, they will continue to grow up with horrible ideas, beliefs, habits etc. that they would very likely have ended up questioning in a public or private school setting. Schools may be poorly run in some countries, even in America, but they do offer some base level of questioning and reasoning that these kids will never even get.
Most of them are usually religious and you get all kinds of anti-gay, anti-science rhetoric drilled into them. Even when kids go to public schools a fair amount of people end up not believing in climate change or evolution to any degree at all, but when they are homeschooled and their parents don't, then it's an almost guaranteed thing to happen because those are the types of people that homeschool, ones that don't have any sense and don't want their kids learning things they don't believe in.
In this case, you have what seems like a secular, but spiritual hippy that thinks she understands science when she doesn't. She is trying to apply random scraps of science she heard about the left brain and the right brain and twist it into something that makes sense to her and she is going to end up 18 year old kids that have the education, social skills and common sense of a 7 year old at best. Maybe worse if she really doesn't end up teaching them to read at all, which I doubt and hope she gives in to eventually.
It doesn't even look like they own a TV. If you have books and teach them to read, that's all you need, but if you get rid of that, they at least need some form of TV media to learn from, what are they going to do, follow their parents around each day and learn about a grasshopper, cow and cat? Talk about a disgusting educator.