Zadia and her backstory (part 1)

Zadia and her older brother Zaid lived with their grandma because their parents died (why they died in special bonus). They grew up poor but they smiled, laughed, and played with the other children in the village, but the only reason why they did not cry was because their father said,"Promise me the both of you will be safe and still smile when me and your mother are gone." They heard their parents say that as long as they can remember, everyday and every night. They never really knew what that meant but they were always curious about what it could have been. Their grandma always said "Don't worry my sweet children because it's nothing that you should worry your pretty little heads about, so why don't you go out and play?" They left to go outside but thought " What could grandma be hiding?", so they went back inside to find clues but their grandma said ,"What are you two doing I thought y'all were going out to play? Well, anyways dinner is ready."