( CNN ) -- A 13-year-old girl is dead and her mother is behind bars , accused of stabbing her ex-husband and trying to kill her children by poisoning them . Officers in Casa Grande , Arizona , responded to a 911 call on Christmas Day . A man said that his ex-wife , 35-year-old Connie Villa , had stabbed him but that he had managed to escape and was driving himself to a hospital , police said in a statement . When officers arrived at the home , they found Villa with stab wounds , holding a knife to her chest . They managed to subdue her and conducted a sweep of the home . Police found the body of Aniarael Macias , Villa 's daughter , in the bathroom . `` Although an autopsy for Aniarael was conducted yesterday in Pima County , the results of which did not identify a cause of death , investigators feel the evidence found at the scene of the crime along with interviews and medical information of the surviving children , give our Department cause to believe Connie Villa was attempting to end the lives of all of her children and her ex-husband , Adam Villa , '' the statement read . Connie Villa faces one count of first degree murder in the death of her daughter . She is also being charged with four counts of attempted murder of her ex-husband and her three surviving children , ages 3 , 5 and 8 . Police say she forced her children to take prescription narcotic drugs . The three children had trace amounts of opiates in their systems . All are in good condition and were placed with the family of their father , Adam Villa , 33 . He is in stable condition . Connie Villa was released Sunday from Maricopa Medical Center , where she was treated for what investigators believe were self-inflicted stab wounds . She was arrested the same day . According to Thomas Anderson , a police spokesman , she has made an initial appearance in court . No bond was given . Aniarael 's father released a statement asking for privacy and prayers . `` On behalf of Michael Macias , Ania 's father , Vera Macias , Ania 's grandmother and extended family , we request that the focus of this tragedy be a celebration of our precious Ania 's life . She was a gentle , kind and beautiful spirit who was taken from us much too soon . Michael and his family are heartbroken , '' it read . `` We are writing this statement in hopes that the media and other outlets will allow Michael and our family to grieve peacefully . We thank everyone for the outpouring of support for our family . We appreciate your prayers and positive thoughts . We pray that justice will be served . ''
Connie now faces one count of murder in the death of her daughter , Aniarael . She is also being charged with four counts of attempted murder . Her surviving children had trace amounts of heroin in their system , police say . Connie 's father asks for privacy and prayers .