Does the money left by a father in his daughter's account, with his oral will not to give any of it to her siblings, constitute her private property or part of the heirs' inheritance?

Merely depositing money in a woman's name is not considered a gift unless accompanied by an explicit statement or an action that indicates the donor's transfer of ownership. Otherwise, the money is an inheritance to be divided among all heirs, each according to their share. Any will that deprives some heirs is invalid according to Islamic law and is forbidden.