The boldest decision Leia ever made was to come to Hogwarts, which bought her seven years of respite from an almost-overwhelming life.
Sirius Black had long disliked this delicate girl - so before he was 15 years old, the most enjoyable thing he did, apart from playing pranks on James, was bullying and teasing Leia. Leia was so annoyed every time that she jumped up in anger and called him a bitch.
After Sirius Black turned 15, the crowd at Hogwarts could see him chasing Leia to apologize every day.
Sirius Black: It smells so good! Leia, I was wrong!
Purpose: Respect others and mutual respect is important