Eh, my mum just buys store-bought sauces.
Not the moms that gave up their kid for adoption.
Variations notwithstanding there are generation recipes. My mum makes a mean bolognese which she learned from my granny. Up until a few years ago I wouldn't be able to tell the difference between them.
Mine doesn't use sauce
I know in like the 60's my mom made sauce from fresh tomatoes onions and all the fresh things from the gardens, but after that it was always a jar from the grocery, doctored up as she called it.
My adoptive Mum makes marinara, Bolognese, and pesto sauces to name three, using ingredients from outside. It would be a sin not to credit her Italian roots.))