I grew up in a predominately JA neighborhood in Los Angeles and I have always been amazed at what Japanese mom's will sacrifice for their children. I am speaking of (Issei) immigrants and not JA moms. My best friend was a Nisei and this is the story he told me.
In early 1942 his father was arrested by the FBI and incarcerated, without just cause, in San Pedro. Mrs Hirai was left with three young children aged 2, 3 and 5, very little money and severely limited English language skills. But she was bound and determined that her children would not be raised in a "relocation" (read: concentration) camp. She met an elderly couple who told her that if she moved inland she and her children would not be put in any camp. It was only the those in the coastal states who would be sent to the camps. And so began her long march from Los Angeles over a thousand miles to Idaho, alone with three young children. She got a job picking sugar beets in Idaho and took her children to work in the fields with her everyday for the next year until Mr. Hirai was released by the FBI and was able to reach his family. Some effort by a simple country woman in a land far off and completely foreign to her.
My wife's story is almost as stirring. After the war it was difficult to find any work in Japan so my mother-in-law had to take a job as a cook and do the laundry in a cat house near Johnson AFB in Saitama. Everyday she took my wife on her back and her step-daughter by the hand and went to work for 12 hours and even more. They offered her a place to stay at the "place of business" but she refused because she didn't want her girls to have to say they were raised in a cat house. I really loved that woman, even more than my own mother. She was tough yet kind. A devout Buddhist many of the towns-people called her a "living Buddha". No matter how much she didn't have she had something for those who had less.
I'm sure there are great moms like that everywhere but it just seems to be with more frequency in Japan.