After the twins were born, Leto played very little part in Greek mythology. She is the goddess of motherhood and one of Zeus' many wives.
Birth of Artemis and Apollo Edit
Leto found the island of Delos, which floated and so was not an island nor mainland, and gave birth there. Leto gave birth to Artemis without any problem. However she was in labour with Apollo for nine days and nine nights. Artemis helped Leto to give birth to Apollo.