Well, this 3 chapters only reinforce the impression I had of her since the time she decided to rub her breasts on Negima's face to make a point: she is a workaholic yuppie that specialized in manipulating people as a career path to whom feelings and opinions of everyone else are just tools of the job. I mean, I don't even have to speculate anymore, she said it out plainly ... and that makes it better that her and Motoi did not ran away in the past, since she would most likely dump him for a better opening in life ( I mean , isn't that exactly what she says to herself as the reason she acepted the notice partner? That it was her lifeline? Or that she didn't had sex with Motoi because she didn't want to devalue in the the eyes of a possible husband ? ).
I just feel pity for Motoi ... Not only he kept having feelings for her for a long time, but when she feels unhappy with her husband wanting children when she wants to get a promotion ( remember, the whole notice system ( the whole reason she has a job, remember ) excuse to exist is that people joined by that system have more children ... and I would not be surprised that a couple that has no or few children would probably be shunned in a very Japanese way, so her husband has reasons to be concerned ), she decides to yank his chain for fun and giggles until she is satisfied and then decides to pretend their past never existed on her own. Motoi, is a nice enough guy , he didn't deserved that :/