Plus with the sprogg, she'll be forever tapping him or the firm up for extra cash.Mrs B's view (and that of her cackling coven who follow such things closely) is that she will dump him in favour of a better economic opportunity.
Just as she has dumped all previous relationships when utility to her has expired.
Just a matter of time.
"Things are tight this month Harry, I'll need some more money!"
"What no more? I'll have to think about resurrecting Archie's application to Compton High School. You know the one like in the film!"