There is no requirement that any person leave any gift or bequest any piece of an estate to any child or children though a Will. Directing assets through a Will is at the discretion of the Will’s maker.
Most states have a requirement that permits a spouse to elect against the validity of a Will should he or she not receive any property through the Will, but such an option does not exist for children of the Will’s maker.
Details on an affordable method to create a valid Will can be found at Standard Legal’s Last Will and Testament legal forms software page.