Query: Why did families send their girls to Diego's monastery? 
Context: This convent would become the foundation of the Dominican nuns, thus making the Dominican nuns older than the Dominican friars. Prior Diego sanctioned the building of a monastery for girls whose parents had sent them to the care of the Albigensians because their families were too poor to fulfill their basic needs. The monastery was at Prouille would later become Dominic's headquarters for his missionary effort there.