@Kaarme
Nah, if her child is under 18 or 15. She might miss him.
But he is already 27 (now is 29).According to the brother age, their father remarried when he is 14, and also he said that he most time in dorm.
As I read many manga about dorm life, it seems like Japanese don't give a shit about missing someone since their children always stay in place that they can comeback to find anytime