Is this a business capable of supporting her? It will need to be.
If it were me, I think I would tell your wife what your son said. She should have the opportunity, is she wants, to set the record straight with him. You don't have to talk further about it that just telling her what he said and saying, "I thought you'd want to know".
You cannot be lonely if you like the person you're alone with. Dr. Wayne Dyer