Tragic actor Paul Walker's mother has filed official papers requesting guardianship of her granddaughter.

Cheryl Walker claims 15-year-old Meadow's mother, Rebecca Soteros, is battling alcoholism and cannot properly care for her teenage daughter.

In his will, the Fast & Furious star, who died in a car crash in November (13), stated he wanted his mother to become Meadow's guardian in the event of his premature death.