One thing Jenifer Medeiros could always count on was getting a text message from her 15-year-old son, Nate Torres, whenever he went out.
The Windsor High School sophomore was true to form Saturday night when he attended a party with friends at a house near the Town Green. He sent frequent texts, including a final message at 10:30 p.m. saying he would be home soon.
"The last thing he said was, 'I love you mom,' " Medeiros said. "He always said 'I love you mom.' "
But he never came home. Around midnight, Medeiros said she got a phone call from someone who said her son had been shot at the party on Windsor Road.
She rushed to the house, getting there as police arrived, just in time to see her son being hauled away in an ambulance.
Medeiros followed the ambulance to Santa Rosa Memorial Hospital, where she waited for five hours outside the emergency room, hoping Nate would be OK.
But he wasn't. Early Sunday morning, a detective came out and told her Nate was dead, she said.
"He was my best friend," said the single mother of four boys, breaking down as she looked at pictures of Torres and his twin brother, Daniel. "I literally raised him on my own my whole life."
Investigators remained silent for a third straight day about details of the attack or a motive for the shooting, but Sonoma County Sheriff's Lt. Carlos Basurto said detectives are trying to determine whether the slaying was motivated by gang issues.
"We are investigating this as a possible gang-related homicide, but I can't get into details. We need to confirm some things," said Basurto, who is supervising the investigation.