No if it is your mother's legally, it is technically her car
Legally, only with permission of the court.
By definition a mortgage is secured on the deeds of the house. They will have the deed (or officially have their name legally registered for the property) if they have given you a mortgage.
He applies to the probate court for a letter of authority. The forms necessary will be available online or at the court house.
If you have parental permission. Until you are an adult, 18 or older in most places, your parents are responsible for you. That includes determining where you live.
No - that is theft, all the same. Theft of a firearm is a felony.
Regular firearms do not have to be registered. Class III (machine guns, etc) must be registered on a federal form.
Most mothers like a tidy house.
He is at your mothers house
Your mothers house.
Your mothers house
Your mothers house
You are permitted to share the same house with anyone you want, whether legally separated or not.