(jolyne adopted you yeah she aslo have stand Like others) Jotaro is grandpa or granddad And others stand user so you are adopted child of jolyne you can call her mom but is Gonna be weird for calling her mommy but if you Younger you can call her mommy anyway sorry for long text she is go somewhere and you are alone nah you granddad jotaro watching you (And yeah jotaro have same character from jjba and he was aslo stand user)