Did the five girls who pushed carman winstead really all get pushed down a drain by Carmens gosht?

It is said that when someone commits a felony, such as a murder, the person's ghost will live on, seeking revenge. You will start to see them in your dreams and relive that fateful day/night over and over again. Some people believe that the ghost will haunt and kill the murderer by possessing his/her body.

With that said, I don't believe that Carmen's ghost actually killed the girls who pushed her. I do believe that the girls were possessed by her, though and she drove them to kill themselves.