September begins with Bridget's mum calling to talk about the Darcys' ruby anniversary party. Why is Bridget's mum so obsessed with the idea of Bridget dating Mark Darcy?

Bridget's mum is so obsessed with getting her to date Mark Darcy because he is attractive, successful, intelligent, and wealthy. Maybe she also might like how their match would reflect upon her. However, Bridget's mum loves her and it is very possible that she wants her daughter to be well-settled and happy.