What happens to my daughter's inheritance when she is just shy of 18?

The Will itself may state that any gift to a beneficiary under 18 shall be held in trust until she reaches a certain age.  Check the county probate records for a copy of the Will. If not, since a minor cannot inherit, the inheritance must be paid into a Uniform Trust for Minors Act bank account (for amounts under $35,000), into the court registry (for amounts up to $100,000) or into a court-created trust (for amounts over $100,000). Spouses and family members can ask for a home and contents to be set aside in a dependent administration.  Talk with a probate lawyer who practices in the county in which your daughter's father lived and died to see whether this is a possibility. If not, while you do not give dates, it is (barely) possible that your daughter was 17 when her father died but will be 18 when the estate is admitted to probate and distributions can be made AND that the house does not need to be sold to pay for the expenses of her father's last illness and funeral and the cost of administering his estate.  If so, hire a probate lawyer who practices in the county in which her father lived and died to create a Family Settlement Agreement and/or file a Motion with the court permitting her to inherit the house.