Who is Sophia Lampton from Valis and what is their importance?

A precocious two-year old, Sophia claims to be the promised Messiah, an all-knowing, protecting, fully human who is an incarnation of VALIS, her Father. VALIS has saved people many times under many names before conceiving Sophia in actress Linda Lampton. Linda's husband, Eric ("Mother Goose") Lampton, is not involved. They raise Sophia on a vineyard in Modesto, CA, surrounded by animals and constantly monitored. VALIS himself protects Sophia.