Teachings that don't speak of pain have no meanings, because a person cannot gain anything without giving something in return, whether it was time, effort, feelings… It could be anything under any shape. The most sacrifice one would make was time, because time cannot go back, it just strives forward without looking back.
Duncan spent the whole night guarding her doors while she indulged in pleasure and rapture. He made sure to sneak the Wanderer into his clothes and examine it whenever the corridors were empty. He didn't understand why the Ambrosia kept him in front of her doors while no one would hinder her life or cause her mischief. It was all for creating troubles for him. She knew he was lying about his abilities and wanted him to show them so he could be her loyal dog. She was pretty satisfied with him as a dog.