In all the debate below about Wentworth's treatment of Anne when he first comes to Upper Cross, I am struck by something else that it is anotther instance of how alone Anne is.
She is drawing all his fire for what happened in 1806. Neither Sir Walter nor Lady Russell is present. I am not saying he would have behaved towards them in any particular way, or that it would have been any sort of comfort to her for them to be present (quite the opposite, probably) but that their presence might have provided more of a context for him. But because she is alone, and no one else has a clue, all his confusion and anger is focused on her.