Complex sentence: As he tried to apologize, Betty told him no, and besides she had other things on her mind besides helping Daniel, and that was learning from Hilda that the HMO had cut off Ignacio pending an investigation.
Split into simpler sentences: As he tried to apologize, Betty told him no, and besides she had other things on her mind other than helping Daniel. She learned from Hilda that the HMO had cut off Ignacio pending an investigation.