I can see no mention of Alice Valletort being a child of Henry I and also no mention of a connection with Ralph de Valletort of Trematon with Henry I. Alice de Valletort seems to be curator of these profiles which have appeared in Henry I's tree which is mainly curated by myself.
A relationship I have found (unconfirmed) on ancestry gives:
Henry I>
Rainald de dunstainville m: Beatrice fitzRichard >
Joan Fitzroy m: Ralph de Valletort son of Robert de Valletort and Alice Unknown.
Could this be the relationship intended?