This family didn't lack money and from what she has seen, at least from the years when the two were dating and fiercely in love, Valentine just wanted the presence of his partner.
It didn't matter whether she was working or not working. After all, he could afford to raise a wife and many children. The companionship and knowing that she is there for him, that must be what he wanted and yet Philippa to pursue her career she abandoned all that and left him alone as if he was a bachelor.
Did he marry her just to live such a life?
Growing up in these rich families, he knew the kind of wives that were needed and were mostly liked.
A wife can be established, work hard and achieve a lot of greater things but if you aren't virtuous, without children and don't get along with your in-laws then you are doomed.
