Legal Question in Wills and Trusts in Louisiana

I assume the house was purchased during the marriage and therefore is community property. In that case, your father owns 1/2 of the house and the children are the "naked owners" of the other 1/2. The ownership vested upon the death of your mother. As naked owners, the children own the title to the house, but are subject to the "usufruct", or right to use the house that the law gives to your dad as surviving spouse. Unless your mom's estate is complicated, the succession can be opened and Judgment of Possession obtained in one day.(It can be done that fast, I am not saying you can find an attorney who has the time to do it in one day) The only way the public can know who really owns the house is if a Judgment is done. The children can donate their interest or renounce the succession in favor of the father. I have never looked into a reverse mortgage, but as far as I can tell, the reverse mortgage gives money to the owner which they do not pay back and when they die, the inevitable result is the mortgage holder sells the property for a profit.