During the Treta yuga, powerful and evil forces had taken control of the world. The combined cries of devotees inspired a divine solution. Mahalakshmi, Mahakali and Mahasaraswati combined their shakti's (powers) to produce a Devi powerful enough to free the people of their suffering. That powerful Goddess that they produced is Vaishno Devi.
Vaishno Mata quickly disposed of an evil demon who was preventing devotees from their religious practices. She took a birth in South India so that She could continue with Her divine mission here on earth. After some time She left home to perform austerities and meditate on Lord Rama. At that time Lord Rama was searching for his wife Sita who had been abducted by the evil Ravana. Rama appeared before Vaishno Devi. She asked to be his wife. Rama refused saying that he was already married but if Vaishno Devi could recognize him when he returned next then he would agree to marry her.