I disagree with him also. But I know Virgie won't stop fighting to get custody of her granddaughter.
I can tell you from personal experience, Grandmothers, even wealthy Grandmothers, are not necessarily the best person to raise a child. If she goes tot he mat with Larry over this baby, then she is likely to be cut out of this childs life, and I don't think she wants that.
I really hope O'Quinn isn't doing this strictly for the money.