single mom tori vienneau was surrounded by love. >>> hello, and welcome to "dateline. >>> single mom, tori was surrounded by love. in addition to her baby, dean, she had a boyfriend, a best friend, and a mother who adored her hear the grown-ups work as a team, caring for the baby. when tragedy stuck struck, tori realized, the only way was to fight for justice. here is josh mankiewicz with "complicated." >>> in some families, the birth of a child can change everything . >> i would not have cared if we had a boy or a girl. it was going to be nice to have a little boy . >> dana was over the moon when her first grandchild was born. dean roberts came into the world september 26, 2005, weighing seven pounds, stretching out to 20 1/2 inches . >> he was beautiful. i was madly in love with him . >> her husband , roy, felt the same way. >> you were charmed. >> i was absolutely charmed. >> the baby's mother, dana's daughter, was just 21 and not ready for the challenges of parenthood. as baby dean grew from a newborn, to a happy infant with a sweet smile, tori grew as well . >> he was something w