Complex sentence: Lola claims that she does not know the identity of her attacker, but in a fit of pique the still-wounded Briony tells everyone, including the police, that she saw Robbie commit the act.
Split into simpler sentences: Lola claims that she does not know the identity of her attacker. In a fit of pique the still-hurt Briony tells everyone, including the police, that she saw Robbie commit the act.