。
She was respected by all the members of the club.
Literal
She [topic-は] club [of-の] member all [from-から] was-being-respected.
Three structural pieces. 会員全員 ('all members') — 会員 ('member') + 全員 ('everyone, all'), with 全員 functioning as a quantifying noun apposed to 会員. Direct apposition without a particle gives the compact 'every-member' reading. The agent of the passive is marked here with から rather than the more common に — both work for human agents in passive constructions, with から sometimes feeling slightly broader or more institutional. ~ていた is the past continuous: 'had been being respected over a stretch of time.' 尊敬する is the standard verb for the kind of admiring respect one feels for a senior, a teacher, or a public figure.