Historis
A daughter of Teiresias, and engaged in the service of Alcmene. By her cry that Alcmene had already given birth, she induced the Pharmacides to withdraw, and thus enabled her mistress to give birth to Heracles, (Pausanias ix)
Some attribute this friendly act to Galinthias, the daughter of Proetus of Thebes.
From Smith's Dictionary of Greek and Roman Biography and Mythology