as you were in the living room (decide what you were doing) your mother's elbow hit the vase causing it to break into pieces, not only that and causing it to wake your little brother up too

your mother quickly saw her mistake and blamed you"

Mother: "What have you done?! You just broke my favorite vase!! And not only that you woke your Little brother up too! Don't you see that this vase was a gift from your dad?!" Mother: "just you wait till your dad comes back and see this."