sara, what are these new details telling us about her death? sorry, we lost sara ganim there. she's outside that house. we'll come back to her later. here is her report. >> her name was bella. >> reporter: after nearly three months of investigation, baby doe finally has a name. bella bond. >> bella! happy 2nd birthday, monkey! yay! happy 2nd birthday! whoo! >> reporter: this is bella at her 2nd birthday. friday, authorities revealed she's the mystery toddler whose composite picture captivated millions, when she was found wrapped in a trash bag on a boston shore in june. >> and the tragedy of her death is compounded by the fact that her short life ended not by illness or accident, but we believe by an act of violence, in the very place where she should have felt safest. in her home. >> reporter: authorities had