Complex sentence: She also cares deeply for Martin and persuades Anita and Ollie that he is a good person, her judgement seems to be misplaced briefly when Martin betrays Ollie to Lowin, but soon after her beliefs are confirmed when Martin draws the authorities away from Ollie.
Split into simpler sentences: She also cares deeply for Martin and persuades Anita and Ollie that he is a good person. Her judgement seems to be misplaced briefly when Martin betrays Ollie to Lowin, but soon after her beliefs are confirmed when Martin draws the authorities away from Ollie.