More than three and a half years after the incident, Christmas was sentenced Wednesday to four months in jail and five years' probation.
Tammy Benthall, Lauren Davis's mother, told WFAA-TV she doesn't believe the punishment fits the crime.
“The system did not work. It failed us,” she said. “There is a hole in our hearts that will never be filled.”
The couple's family and friends are working to change state law to ensure tougher punishment for drunken drivers, Benthall said.
“We want to see laws changed so that other people are not sitting, grieving the loss of their daughter,” she said.