The girl did not say where the motel was located and the call came from a blocked number.
Bartolo is 5 feet 4 inches tall, weighs 120 pounds and has black hair and brown eyes.
The Riverside County Sheriff's Department said Bartolo may be with 35-year-old Danny Ramirez.
He is 5 feet 5 inches tall, weighs 180 pounds and has numerous tattoos.
Anyone with information on her whereabouts is urged to call the Riverside County Sheriff Department's Jurupa Valley station at (951) 955-2600.