That is the question they are tring to anwser. her claim is that the baby was concived by the Holy Sprit in a cloister convent...no men at all...no outside contact....
Immaculate conception does not mean "virgin birth." They are two different conepts. "Virgin birth" means Jesus was born of a Virgin, with no human father. "Immaculate Conception" means Mary was conceived (in the normal way) without Original Sin.