Back before the end of the world, I lay down after marrying the boss

In her previous life, she was taken advantage of by her best friend and her own good cards were beaten to pieces, and she died tragically in the end. Back before the apocalypse again, grandma was afraid that she wouldn't survive, so she found a good in-law for her. In the end, she chose a man that no one was optimistic about, and who knew that she would be favored by the mysterious boss! From now on, I have space in my hands and no worries about food and clothing. The main theme is that a stupid person will have stupid blessings...