Songs for a Project

[Sad_Alto]

Im doing an English project that requires me to find a playlist of songs relating to a character from a book Im reading.
So if anyone knows any songs from a musical (in general too, I just feel like musical songs are usually ones with more depth) that are about a love letter, itd be a huge help!
The character is Beatrice from Much Ado About Nothing, if you know any other songs that describe her or her actions.
I currently have Wont Say Im In Love from Hercules, I Hate Men from Kiss Me Kate, and Falling Slowly from Once the Musical

[Sad_Alto]

Oh and I also need a song about a strong sibling-like relationship (the characters are cousins, but there aren't any songs about that lol).