“You shot him … from behind, which is a very cowardly act on your part,” she said. “I firmly believe had you encountered him face to face we would not be here today for your sentencing.”
Waldenville's siblings said Thursday they have not seen him since August 2011, and are embroiled in a “messy” guardianship dispute with the deputy's wife.
“Prior to the shooting we were a very close-knit family,” Waldenville-Newman said in her statement.
Prosecutors said justice was “absolutely served” in the case.
“I applaud Judge Watson for imposing the sentence,” First Assistant District Attorney Scott Rowland said.
Co-defendant Stephen Terrell Prince, 19, of Oklahoma City, pleaded guilty in December to one count of shooting with intent to kill and one count of robbery with a firearm.
He will be sentenced next month and could face up to life in prison.
Prince had a deal with prosecutors to testify at Baker's trial but refused to do so and forfeited a 17-year prison sentence.