The danger is not giving her enough calcium so it doesn't help her contractions. If you have any Tums in the house, give her one of those. Break it in half and give both halves to her in addition to the calcium pill from your grandmother.
Be sure she has water to drink. Getting dehydrated will make this much worse. Put some sugar in the water to elevate her glucose so she won't go into shock.
Be sure she has water to drink. Getting dehydrated will make this much worse. Put some sugar in the water to elevate her glucose so she won't go into shock.