Qui est Françoise? Who is Françoise?

Tous mes lecteurs habituels connaissent Françoise! Mais souffrez, chers amis, que j'informe de nouveaux fans.
Both Françoise and me were teachers at the same school; she was 20 years younger than me and I helped her when she started to teach. We became friends.
She had a young brother, Luc...and what had to happen happened: Luc and my daughter Delphine got married so much so that Françoise is now the sister-in-law of Delphine, and of course, still my friend.