He basically all but told her that Janice killed Richie.
He told her Pussy was in the Program, and Carmella later referred to Angie Bompensiero as one of the "widows" on Tony's payroll.
He also told her he would "get" Mikey Palice. The next day, it was said on TV, that Mikey was missing.
She knows about illegal firearms in the house including the hand grenade.
But he didn't TELL her that Janice killed Richie. He never said it. In fact, as she goaded him, he even warned her that once he tells her, she's an accessory after the fact.
Pussy being in the program was a lie anyway. Not sure if a civilian being knowledgeable of a lie told by a mobster counts as harboring information. Pussy was never actually in the program, obviously.
Tony saying he's going to "get" Mikey Palmice is not necessarily saying he's going to kill him. The fact that he does get killed is circumstantial. "get" is a vague term, and is often used jokingly.
Illegal firearms, especially the amount for self consumption that was in their house, would not necessarily bring about a mob related charge.
Carm knew Tony was in the mob, and she had ideas about a lot of things, but she didn't really know shit.
