Ayan napo please can you help me

Answer:
1.) I have to talk to her calmly and say to her that sorry for our misunderstanding and tell about the things/happy things that we've been together.
2.) I should tell my parents about my sibling and i need to tell my sibling dont do it again.
3.) I will just redo my missing work,but if i didnt finished it before 1 hour, i would tell my teacher what happened.