(CNN) -- The grandmother of a missing Maine toddler says no family members in the home the night the girl vanished had anything to do with her disappearance. 

"I feel violated. Somebody came into my home and took my granddaughter who was sleeping," Phoebe DiPietro said during her first television interview about Ayla Reynolds, the now 21-month-old toddler. 

Ayla disappeared December 17. Police have said they believe foul play was involved. They also say the DiPietros have fully co-operated in the investigation. 

Sitting in her living room, steps away from Ayla's bedroom, DiPietro said she heard nothing while she slept that night. She wasn't the last one to go to bed that night and wasn't sure whether the doors were locked. She and her son suspect the child was abducted. 

Update: Grandmother changes story 

"I'm sure that eventually they will be able to let us know how someone go into the house whether it was an unlocked window, an unlocked door, I don't know," DiPietro said. 'If I knew, it wouldn't have happened," she added. 

Investigators have said there were several adults in the DiPietro home that night, including DiPietro and her 24-year-old son. Police won't identify the others, nor reveal much else. 

Neither will Phoebe DiPietro. She says detectives have asked her and her son not to divulge details of what happened that night to avoid possibly hindering the investigation. 

"I can tell you there was not a party here at the house. Just beyond that, I can't answer any questions." She says her son put Ayla to bed every night. 
In who's home?
DiPietro