One more thing, I would be careful about assuming that the wife is unfriendly or rude.
Many things could cause her to behave this way: she could be on the spectrum or just terribly introverted or have physical/mental wellness issues.
Our neighbor has confessed that she got a lung cancer diagnosis the same week we moved in next door and she was so ashamed that she she had been smoking on her back deck in full view of us that she couldn't bare to be confronted by us when she saw us!