The deed still has your father's name on it. That is normal.
When somebody dies, the deed does not update itself. There is no office that quietly changes the name. The house passed to the heirs at the moment of death, under the will if there was one and under Mississippi's intestate rules if there was not, but the public record still shows the name of the person who died. Sometimes for decades. That is not a mistake anybody made, and it is not a problem you have to solve before you are allowed to talk to anyone. It is the ordinary starting point for nearly every inherited house on this coast. What it does mean is that the chain of title has a gap in it, and closing that gap is the real work of an heir sale.
Everyone with an interest generally has to sign
An heir is not the same thing as the person holding the keys, or the one who has been paying the insurance, or the one who lived with your mother at the end. If four children inherited, generally all four have to sign. So does a spouse of an heir in some cases, because Mississippi requires a spouse to join in conveying homestead property. So does the brother nobody has spoken to in fifteen years. So does the child of an heir who has already passed, because a share does not vanish when its owner dies, it moves down a generation. Finding everyone is usually the slow part of an heir sale. Start it early, rather than discovering a missing cousin the week of closing.
An affidavit of heirship, or a full probate
There are two common ways to close the gap in the record. An affidavit of heirship is a sworn statement, usually from two people who knew the family well and inherit nothing themselves, setting out who the deceased was married to, who the children are, and who survived. It is recorded in the land records. It is cheap, and it is fast. A probate runs through Chancery Court in the county where the property sits, takes months rather than days, and ends in a court order nobody can argue with. Which one your family needs is not your call and it is not ours. The title attorney decides what he is able to insure, and he decides it by reading the actual record.
The title attorney sorts out who signs
This is the part that takes weight off you. You do not have to learn Mississippi succession law, and you should not try to guess at it. Every closing here goes through a licensed title attorney. The attorney runs the title search, reads the will if there is one, identifies every person who holds an interest, tells you exactly whose signature is required and in what form, and holds the money until the title is clean. Heirs living out of state sign in front of a notary where they are. Nobody is asked to fly in. If the record cannot be cleared, he says so early, before the family has spent money or made plans around it.
An empty house does not wait for the family
Taxes run whether anyone is living there or not, and an unpaid year goes to the county tax sale in late August, which starts a two year redemption clock on a house nobody is watching. Insurance is the other one. Most homeowner policies change or lapse once a house is vacant, and on this coast an uninsured empty house between June and November is a real exposure. Then the small things add up: a slow leak nobody hears, a grass citation from the city, copper pulled out of a place that looks unoccupied. None of this is urgent in the first month. Most of it is real by the sixth. Knowing that is not a reason to rush, it is a reason to put a date on the calendar.
When brothers and sisters do not agree
One of you wants to keep it because it was home. One wants it sold by spring. One has been covering the insurance for two years and feels owed for it. This is the most common reason an inherited house sits empty, and underneath, it is usually not an argument about money. It helps to get the disagreement onto paper: what the house is worth in its current condition, what the repairs would cost, what taxes and insurance run each year, and what each share actually works out to. Some families buy each other out. Some rent it and split it. Some sell. If it stays deadlocked for years, any co-owner can ask a Chancery Court to force a partition sale, and that outcome rarely satisfies anyone, so it is worth exhausting the quiet options first.