The mother dances with her two children but she is also is endlessly tied to them in a graceful circle of movement. She bends over them protectively but their weight also causes her to stoop. It symbolizes the continuous bond between parent and children in an unbroken endless moving circle.
This represents the life force moving upwards towards the light. The female form moves into the male form which moves into a form which could be lovers entwined or the new bud on a flower just opening, symbolizing the process of new life being created.