Lucent Sylph

Lucas Thissel has something he fears: an alien species of palm-sized glass fairies called Lucent Sylphs. They came through a portal from a metaphysical dimension, and they indenture themselves as slaves to human beings. Too much neglect or unkindness, and they will cloud over and disintegrate. Too much love and their hearts are overcome and burst.

And one has attached herself to Lucas.