India, Dec. 28 -- The best friend of a Texas teenager who mysteriously disappeared from her home early Christmas Eve morning has shared the missing girl's heartbreaking last words. 19-year-old Camila Mendoza Olmos' loved ones thought she was going on her regular walk, but she never returned.

Camila was last seen outside her San Antonio home just before 7 am on Wednesday, December 24, the Bexar County Sheriff's Office announced. She was last seen wearing baby blue pajama shorts, a black hoodie and white shoes.

Camila's childhood best friend, Camila Estrella, said the pair were on the phone Tuesday, making plans to go dress shopping in order to look for an outfit for Estrella's boyfriend's family event.

"She said, 'Bye Cami, I love you,'...