The wife deserves her summer of peace. After working hard all year, she's entitled to recharge without the added stress of hosting a guest. It's not selfish to prioritize her mental and emotional well-being; she needs this time to reconnect with her husband and herself.
The wife is being utterly selfish. Jack wants to help his brother and strengthen family ties, but she's prioritizing her own comfort over her husband's family. Her desire for a 'private summer' is just a thinly veiled excuse to avoid familial responsibilities and potential inconvenience. She should support her husband's efforts to support his family.
While the wife is entitled to her personal time, completely dismissing her husband's desire to help his brother appears rigid. The husband should have discussed this more thoroughly, considering her feelings and offering compromises. The wife also needs to understand the importance of family ties, especially when it involves helping a relative in need. Both parties need to communicate better and find a middle ground that respects both individual needs and familial obligations. A compromise could involve setting clear boundaries and expectations for the visit.