This article is bizarre. The husband is a cheat and if I were the writer I would have booted him out. The wife is pretty delusional. I guess they are well suited!
I would invite my mother for 2 weeks without asking permission from my husband. And I wouldn't expect him to throw a hissy fit over it. When you marry someone don't you accept their family as your own to a certain extent? It's 2 weeks out of 6 months.