Sarada Devi was born in 1853 in a small village near Calcutta, quite close to where Ramakrishna was born. From a very early age she prayed God to have purity in abundance. Looking at the full moon, she would say: "O God, there are dark spots even on the moon. But make my character spotless."
At the very early age of 5, according to the cultural tradition of the time, she was betrothed to her husband Sri Ramakrishna. At the time Sri Ramakrishna was going through his intense period of sadhana. So intense many of his family thought he was losing his mind. They thought that marriage would help bring his mind back to the worldly realm. However in the marriage to Sarada Devi, Ramakrishna saw the hand of the Divine Mother and so agreed to the proposal.
Sarada Devi didn’t go to live with her husband until the age of 18. She had been hearing rumors about the “madness” of her husband and so felt a sense of duty to go and visit him in Calcutta. Thus she set off walking almost 60 miles to Dakshineswar where she met Sri Ramakrishna. On meeting Ramakrishna she was relieved to know the rumors about Ramakrishna were baseless - her husband was a genuine spiritual man, who exuded not only kindness, but also often went into spiritual ecstasies.
From 1872, Sarada Devi lived at Dakshineswar as a devoted wife and the first disciple of her husband Sri Ramakrishna. Their marriage was celibate and unconventional. For Sarada Devi it was a period of intense spiritual practice and service to her husband, Ramakrishna.