Yes, the property will stay in the estate to be distributed according to the will. Her part will be treated as not being there and the remainderman will get it.
Normally, when a person dies, some person or persons will inherit the possessions of the deceased person. This is easier to figure out if there is a will. If there is no will, the courts have to rule on the matter. In some cases, there is no surviving relative who might plausibly inherit, and property (if any) will be claimed by the state. Abandoned possessions can always be turned in to the police, who can hold them until someone can prove that they own them. However, if the abandoned possessions appear to be of little value, they may just be thrown out.
If he was a member of a religious order, he would have had no possessions. A secular priest would have his belongings distributed according to his will.
When there is no will, all the possessions of the deceased come under the control of probate court, and the court decides how the assets are divided. That will include the car.
An action like that must be handled by the estate. If the deceased has left a will and named an executor, the executor must handle the disposal of any property. If no will was left, the courts will determine what happens to the property.
A POA is extinguished at the moment of death. If a POA was used to sell the property of a deceased person the sale was null and void. The former attorney-in-fact had no legal interest in the property, couldn't sell it and committed a fraud. The buyer did not get title to the property.
In most countries the state takes over the estate and distributes it to the deceased's relatives in accordance with the law. If no relatives can be found the estate becomes the property of the state.
It then declines
If a person gives away property while still living then it is not part of their estate at their time of death. The only property that can pass by a will is the property owned by the decedent at the time of death.
Probate court is relevant after a death. In probate court, it can be decided if a will is valid. After the will is validated, the financial responsibilities of the deceased can be settled and any property belonging to the deceased can be taken care of.
the enzymes change
A person who dies without a will is said to be intestate. Each state has specific laws about how property is divided when the deceased is intestate.
If the parties get divorced, all personal possessions will be divided as part of the divorce settlement. If the parties remain married, they continue to jointly own the property.