Complex sentence: She might get annoyed with her band member's childish behavior, but she still remains loyal and carring for them, as a slghtly stand off friend, if distant only to keep her own sanity.
Split into simpler sentences: She might get annoyed with her band member's childish behavior, but she remains loyal and caring towards them. She is a slghtly stand-off friend, probably distant only to keep her own sanity.