The victim, whose identity has not been released, had been living with the four in Mount Holly, N.J., the past two years, PhillyBurbs.com reported. She originally moved to the home to care for one of the suspects, Georgianna Jester, 51, police said.
Jester and three others, Edward Jester, 26; Ellen Hairston, 34; and Paulette Hairston, 44, face charges that include aggravated assault. Police have not said how the four are related.
Mount Holly Police Chief Steve Martin said Virtua Hospital reported Sunday that a woman patient had been a victim of assault.
He said police determined she had been beaten, forced to drink urine and tortured with a stun gun and pliers over a period of three to six months.
"These people are real sickos," a source said.