Day 17 covers all of Chapter 12, Devadatta, and opens Chapter 13, Encouragement for Keeping this Sutra.

Having last month considered Accumulated-Wisdom Bodhisattva’s objection that a dragon girl can become a Buddha quickly and met the dragon girl, we consider Śāriputra’s objection.

Thereupon Śāriputra said to the daughter of the dragon-king:

“You think that you will be able to attain unsurpassed enlightenment [and become a Buddha] before long. This is difficult to believe because the body of a woman is too defiled to be a recipient of the teachings of the Buddha. How can you attain unsurpassed Bodhi? The enlightenment of the Buddha is far off. It can be attained only by those who perform the [Bodhisattva] practices with strenuous efforts for innumerable kalpas. A woman has five impossibilities. She cannot become 1. the Brahman-Heavenly-King, 2. King Śakra, 3. King Mara, 4. a wheel-turning-holy-king, and 5. a Buddha. How can it be that you, being a woman, will become a Buddha, quickly [or not]?”

See Even A Girl