That was really interesting. I agree with TheRationalizer, the best part was when the wife was like, ok how do we change the ratios for my share? It's clear she felt that by coming up with a justification for not using the double share for her son, they were actually changing the rules for themselves. And you can see in her face that she is not really satisfied with the end result. It is something that I myself used to feel about some of the laws of Islam regarding women: that they are NOT fair and in fact quite unacceptable, but I could live with them (i.e. ignore them) as long as I would not be affected by them. That is exactly what she did for herself. She won't have to lose her house if her husband dies, but only because of the condition in his will. The Islamic law is still against her, and she has to live knowing that her life as a Muslim woman is only fair and bearable because she protected herself from that law.
It's really sad to see how deep the conflict is for them over something that should have been very simple.
Islam is the original champion of women's rights[7th century edition]. But I suppose the definitions have changed in the 21st century, and some people would rather have the 7th century version and go to town about it!

The World is my country, all mankind are my brethren, and to do good is my religion.
Thomas Paine
Facts do not cease to exist because they are ignored !- Aldous Huxley