The phrase "to release these girls" means to set free or let go of the girls who are being held against their will or are in captivity. Full definition
Frustrated, I wanted to release the girls from milk service. (momstown.ca)
Ross recently released Girls in Justice, a follow - up body of work to his first series, Juvenile in Justice. (ampersandla.com)
Girls are recruited to the program by community mentors who have the challenging job of convincing «host» families (I'm not sure what else to call them... these girls are essentially domestic slaves) to release the girls for two hours each weekday. (bostonmamas.com)