"A woman came to me and said she was Bulgarian not Greek. She told me if I wanted she would take care of my baby and that I could come back and collect her later," Ruseva said.
"She gave me her phone number and when we got back in Bulgaria we telephoned her. We tried to call but the phone was switched off," she added.
So far during the investigation, police forces on both sides of the border had suggested Ruseva met personally with the Greek Roma couple -- found caring for her earlier this month -- and passed off the baby directly.
Defense lawyers for Greek couple Salis and Dimoupolou say their clients met Ruseva face-to-face. But when asked about the Greek Romas, Ruseva gave a blank stare.
"Who is this man Christos Salis? I have never met these people," she said.
Although she denies meeting Salis or Dimoupolou, Ruseva cannot remember many details about the woman to whom she passed off Maria.
"I have no clue what her name was. I did not ask and she did not say. That woman said leave your girl here and I'll take care of like I was her mother. I trusted her," Ruseva said.
"The woman looked good. Her skin was not too pale, a bit like us. She was blond. With dyed blond hair," she said.
Despite the gaps in her story, Ruseva says she clearly remembers the moment she said goodbye to Maria.
"I kissed her. I was crying. I was worried. My heart was breaking," she said.