The story behind the name of Goddess Yamai:
Once during their exile, when Lord Shree Ram was searching for Goddess Sita, Goddess Parvati came before him disguised as Goddess Sita to test him. However, Lord Ram recognized Goddess Parvati and called out to her, saying, 'Ye Mai' (Oh, Mother). Ever since, this form of Goddess Parvati came to be known as 'Yamai'.
Other places worth seeing within the temple premises:
Shree Datta Mandir
Shree Bhavani Museum