I would suggest reading up on attachment at some different websites - try
Attachment Disorder information and support at ATTACh.org.,
Welcome to Attachment & Trauma Network* - ATN,
A4everFamily.org - HOME.
Generally speaking, what I have read is that if there haven't been any disruptions to the attachment process in the first two or three years of the child's life, there's less of a chance of attachment issues. However, I would call that a big if....you would need to know the quality of the child's life in those years, and if it was institutional care, was that sufficient?
Fran