Mesa lawyer Ernest Collins Jr. said he wants the teen to be charged as an adult. Collins said his wife was shot in the forehead.
Collins said last week he was on the phone with his wife when she was killed during the struggle with an intruder. She had been in the couple's home and went to a trailer on the property in response to a text for help from their 18-year-old daughter.
Collins said he could hear his wife speak with the intruder before she later yelled at their daughter and her friend to run from the trailer. He said they did and that his daughter heard a gunshot as she got outside.
The Apache County Attorney's Office filed consent charges last week stating the boy had a handgun, knife and hockey stick during the attack.
Authorities said they took the teen into custody without incident last week.
Attorney Cindy Castillo will represent the boy during his preliminary hearing Wednesday.