Problem: If "When Tatyana reached the cabin, her mother was sleeping. She was careful not to disturb her , undressing and climbing back into her berth.", is "She was careful not to disturb Tatyana , undressing and climbing back into her berth." correct?

Answer: no

Problem: If "John ordered Bill to leave, so an hour later he left.", is "Bill left." correct?

Answer: yes

Problem: If "Mark told Pete many lies about himself, which Pete included in his book. He should have been more truthful.", is "Pete should have been more truthful." correct?

Answer:
no