Who's Apollo's Twin Sister?

Artemis was the daughter of Zeus and Leto and the twin sister of Apollo.

What powers does Artemis have?

Artemis, as a goddess, was immortal and had a great deal of power over mortals and events on earth. In addition to the powers ordinary to all gods and goddesses, she possesses perfect aim with a bow, the ability to change herself and others into animals, and control disease and healing.

What is the myth of Artemis?

Artemis is the daughter of Zeus and Leto, and the twin sister of Apollo. She was the patron and protector of young girls, and was believed to bring disease upon women and relieve them of it. Artemis was worshipped as one of the primary goddesses of childbirth and midwifery along with Eileithyia.