This depiction of Kali and Shiva references the human experience of death. Kali, who represents dissolution mates with Shiva, who represents creation. She drives him mad and he forgets who he is. For a time, Shiva is lost. Such is death.
Just to gaze upon the Goddess Lakshmi with a loving heart will bring her blessings to you . Lakshmi ~ the Hindu Goddess ~ "Beloved Goddess, make my eyes ever aware of beauty, make my heart ever open to love.