And remember - certified does NOT mean notarized. The birth certificate your mother brings must be either the original issued by the state or a copy issued by the state with some sort of raised or other official seal applied. A point of warning - some original birth certificates from long ago may not have any type of seal on them. I have read messages on this forum by people who were denied boarding, even though they claimed they were using original birth certificates. You may want to eyeball your mother's bc as soon as possible to make sure it is good to go.