This lovely woman is a successful CEO of a toy company and is also Tomoyo's
mother. She was the cousin of Sakura's mother, Nadesiko. The two were very
close as girls and Sonomi has never quite gotten over the fact that her very
best friend got married. To Sonomi this seemed like an utter betrayal, partly
because Sonomi did not approve of Nadesiko's choice of husband. Sonomi
felt her cousin deserved someone wealthy who would keep in her luxury not a poor,
young teacher. Sonomi was very blind to Nadesiko's happiness, unfortunately.
These days, Sonomi is very busy with her work. She has a cell phone with her
wherever she goes. Her personality is very competetive and she always seems
to be trying to prove that she is good enough. I believe part of this was
caused by what she perceives as Nadesiko's rejection of her. Now Sonomi feels
she must prove she is better than Fujitaka. I'm not sure what she was like
before her cousin's marriage. Perhaps she was out of the limelight, much like
her daughter. Or perhaps she has always been this competitive.
Whatever the case, Sonomi does love her daughter. She doesn't always show it
as she should -- giving Tomoyo loads of gifts instead of spending time with her
and showing up late for Tomoyo's activities. But at least she tries.
Upon discovering Sakura is Nadesiko's daughter, Sonomi develops an adoration
for her daugther's best friend and encourages Sakura to spend a lot of time
at their house. Sonomi also shows an especial thoughtfulness by arranging for
Sakura to meet her maternal grandfather. While this doesn't heal the rift between
the families which Sakura is too young to understand, it brings great happiness
to all of them. There's hope for her yet!