I'm trying to find out more info on Ramona Rizzo, but can't.

I read the book Donnie Brasco a few years ago and he talks about Lefty's daughters marrying mobsters. One of them was said to be stealing from the mob, so the mob gave Lefty the contract on his own son-in-law.

Based on the info we have on Lefty(he killed a son-in-law) and the fact that Ramona is very secretive about her parents, I beginning to suspect, that maybe the son-in-law Lefty killed is also Ramona's father.

Does anyone here know more about this?