I'm impressed. This is such a breath of fresh air, akin to an outside breeze brushing against your skin and the aroma of nature enters your lungs while being embraced by the warm sun after being cooped up in a damp, humid, dark room for a long time.
Bea sacrificed herself. On page 23-24 Ella says she has one thing many people in the world want, but will never have: a best friend. Its the one rare and valuable thing Bea had access to.