On my playlist for Scylla and Charybdis is this song, which for me is a touchstone for the backstory between Anaea and Orithia.  It addresses Anaea's introvert nature, that need to just be by herself, even when it costs:

Free - Sarah Brightman

(As an aside, Googling "Free Sarah Brightman" made me giggle.  I don't know where she'd be restrained or why, but I am up for it.)