Yes, 4 weeks is the usual (unless she's studying for a doctorate, in which case the break would be shorter). In a way this could work to your advantage- if H has to spend more time with her over the break, he's more likely to get fed up of her.
She is totally no match for you. She's in an adulterous affair. That in itself shows what kind of a person she is.
Walk on, walk on, with hope in your heart. And you'll never walk alone.
