Are you trying to dehumanise the female tennis player, saying she shouldn't be upset about missing her childs first steps, trying to deny her emotions?
I can imagine isuch a situation would be upsetting for a woman. The fact that many others have to juggle home life and work is irrelevant. Do you actually know anything about this womans life and the choices she has to make, rather than trivialise her profession as "mummy playing tennis".
It annoys me when people get so judgemental about others they know nothing about. As the saying goes, don't judge someone until you have walked a mile in their shoes.