The alleged attack happened inside a home back on Dec. 11.
New Castle County officials say one 14-year-old, two 13-year-olds, and one 12-year-old forced the girl inside a home.
The alleged assailants, who we are not identifying because of their ages, then attacked her.
One teen reportedly threatened the girl with a gun, warning her not to report it.
All four have been charged as juveniles with felony rape.