Heiress

Noun

 * 1) A woman who stands to inherit.

Thesaurus
apparent heir, beneficiary heir, child, coparcener, daughter, descendant, fideicommissary heir, fiduciary heir, foster child, grandchild, granddaughter, grandson, heir, heir apparent, heir expectant, heir general, heir in tail, heir of entail, heir of inventory, heir of line, heir portioner, heir presumptive, heir whatsoever, heritor, inheritor, inheritress, inheritrix, joint heir, next in line, offspring, presumptive heir, remainderman, reversioner, scion, son, son and heir, sonny, stepchild, stepdaughter, stepson, successor

Etymology
heir + -ess