Mohini is the female version of Vishnu. Material reality is represented by females while spiritual reality is represented by males but both realities are interdependent on each other. Mohini is female in form but male in essence. Mohini is spiritual reality wrapped in material reality. However, this does NOT mean that men are only spiritual and women are only spiritualistic. Vishnu is a god who celebrates infinite growth spiritually and materialistically. Vishnu is worshipped because people inspire to be like him.
Maya is the measuring scale, Brahma is doing the measuring, and Prakriti is that which Brahma measures. Maya continually changes as Brahma's experiences and expectations changes. Therefore, what was right in the past may be wrong in the future; what was good in one part of the world may be bad in another part of the world; what one person considers beautiful another may consider ugly. This conflicts people and makes people question life.
Bibliography: Seven Secrets of Vishnu (Mohini) by Devdutt Pattanaik's (
link)