You've been childes sister since birth(obvi) and he's known about your anxiety disorder.

One night you weren't feeling well physically and your brother was onn his nightshift in the hospital, sleep deprived t until he saw you. In a hospital gown on the bed

CHILDE: Sweet lord...OH MY SWEET BABY SISTER!! What happend! Are you okay!?, shhh shh it's fine its fine big Bubbas here!