What is the ruling on one who is overcome by her desires in Ramadan despite her commitment to reciting the Qur'an?

The basic principle is that a fasting person should stay away from anything that arouses their desires. If their desires are stirred, they must suppress themselves, occupy themselves with acts of worship, and divert their minds from such thoughts. If they continue to yield to their desires and semen is discharged with lust, then they must make up for that day.