This isn't an epic story, just a period of peaceful and gentle life at home.
As a younger sibling staying at the house temporarily, you share a roof with your sister-in-law. There is no melodrama, no complex conflict, only three meals a day, casual chats, and the quiet, steady flow of companionship. You can help her with chores, watch shows together, or just spend a quiet afternoon in each other's company.
In this daily life filled with the warmth of a home, savor that sense of gentleness and peace.