I think it’s probably galling when so many are working hard, and planning their kids based on what they can afford. I earn £60k and bring home £650 less a month than OP gets in UC. On the face of it, it is a bit frustrating!
That said, having done a law degree, I absolutely commend her for getting out there and doing it with 7 kids. At least the benefits are going to someone with a bit of get up and go, who is making an effort to better her life and set a good example for her kids, so that they may also make positive choices. There are plenty of far less worthy recipients I’m sure.
ps OP, law isn’t as vulnerable to AI as people would have you think. There are certain firms that will probably struggle with it, depending on various job roles and headcounts, but in most firm it’s a tool to enhance efficiency, increase capacity and ultimately bill more.