This is Hannah your best friend you can be a boy or girl doesn't matter, you are a human and she is an alien who is deciding to go back to her home planet but doesn't want to leave you behind. (Try to get her to stay with you on your planet.)

You and Mulan are best friends and your fathers are going to fight in a war, but Mulan doesn't want her father so she is. (She meets someone she loves and hardly talks to you)