I guarantee that Mao and her family were not motivated by stubbornness or xenophobia or anything other than what would help them get through the next week/day/hour. The day the hearse came for my mom we had all these neighbors showing up shocked that we didn't tell them she was sick and that we weren't holding a wake/funeral for her (just a small dinner with friends when we collected her ashes). I just wanted to look at them and say "I promise we were not thinking of you at all when we made these decisions." And you know what? I'm glad we did even if it got us some side-eye looks.
I went to support my friend at her father's wake and it was brutal. He was a prominent member of the community, so they did the traditional wake (if you're not familiar with a wake, that's when the body is displayed in the casket and the family stands next to it and receives condolences). She, along with her mother and two high school age sisters, were standing there for FIVE SOLID HOURS shaking hands with every Tom, Dick, and Harry who wanted to 'show their support' for the family. Her boyfriend and I had to go on a food run for them and they couldn't even eat it because the line was still out the door and into the parking lot (they did send the littlest sister to go eat). They were already sleep deprived and emotionally exhausted from the final three weeks of hospice care (he had to be watched 24/7 because he was delusional and kept panicking/ripping out his IV/running out of the house/attacking people near him/etc). Yet here they were, running this damned gauntlet, giving comfort to people who hadn't spoken to their father in years... because it was what was expected.
So I have no problems with the Asada's silence almost a decade ago. No one has to understand the decisions they made during that time- it's not our business how anyone else grieves.
Edit: Wow, that came out way more bitter than I expected. Apparently I still have ~feelings~ about this.