Related על קידושין 82:14

The son, and the hired hand, and the slave, and the wife separate terumah on what they eat, but they do not separate terumah on everything, as a person does not separate terumah on a thing that is not his. [However,] the son [may separate terumah from produce] belonging to father, and the wife [may separate terumah] of her dough -- behold, these [persons are allowed to] separate terumah because they are separating terumah with permission.