Myrna Jolly could not comprehend the news when it hit her a decade ago.
Jolly's 2-year-old granddaughter and the baby's other grandmother were killed in a house fire in Prince George's County. Police say it was murder.
Jolly was in denial about the deaths of little Nakiya Marie Roberts and 53-year-old Dorethea Marie Roberts.
When authorities asked for the baby's footprint record...