In Re the Welfare of M.M.

COYNE, Justice.

On petition of Joy Wells, the maternal grandmother of the subject child M.M., we review a decision of the court of appeals affirming the transfer of the guardianship and legal custody of the child to the commissioner of human services. In re M.M., 436 N.W.2d 827, 829-30 (Minn.App.1989). We reverse.

The record discloses that M.M. was born in September 1985 to Mary E. Miller and an unknown father. Presumably because of her later diagnosed “bipolar affective disorder with psychotic features and borderline personality disorder” which manifested itself shortly before M.M.’s birth,…