The deity here is said to have been born by the sea shore and to have spent her life in devotion to lord Rama. Rama however refused her as he was born in that avatar to be with Sita. Therefore he promised this deity that he would appear as Kalki in the Kali yuga and take her as a bride. He asked her in the meantime to perform tapas and gave her weapons and an army of monkeys and a lion as protection. Who?