I understand years of feeling inadequate and unworthy have left deep wounds, but I still wish he would have told her off. If he tries to have further contact without her making the first move, it'll be even more soul destroying. He doesn't need that sort of negativity in his life, family or not. Blood isn't anything special just because you're related. It's just a liquid, replaceable like most.
The old bag better hope Tony won't get creative with vengence. When her new friend has revealed he's only after her money, she'll realise she's alone. And then it could be too late...