The final straw was the wedding dress she wouldn't let him buy for her. No, Sam insisted, she did not want him spending any money on her, and she had a perfectly good dress she could use.
Saul was familiar with that dress as it was the same blue dress she wore on every one of their dinner meetings. It was blue, shapeless, and had many years of inexpert repairs and patches, Sam having never learned how to sew. And being her old mum's dress, Sam refused to give it to the sonky shop.
And while Saul thought Sam was the most beautiful woman ever, well and truly he did, and of course he wasn't much good at that fashion thing…he just wanted to see Sam in something pretty and new and well fitting for once.
AND she had made him burn his toupees, which he did because he loved her, but really. His head got really cold now, if less itchy
It was then that Saul, being a thoroughly modern man, had an idea.
So when Sam came to him two weeks later sputtering about how on Disc he could give her control of all his money and land, he just smiled and said, well he barely spent any of it anyhow except on dragons. And he trusted Sam and as a modern man he saw no problem with this anyway.
And Sam glowered at him because she knew he was telling the truth. Saul just smiled and suggested that they go look for wedding clothes-"and don't look at me that way Samantha Vimes it's your money you are spending on yourself."
And, as Sam got into the dress a few weeks later, she had to admit it was nice to get something new that even…flattered her. Plus, she had gone and had her old blue dress made into a skirt that she had on under the wedding gown.
For her old mum.