"No mud, no lotus".The lotus connects the three spheres of earthly existence- land, sea, sky because it grows from the mirky mudd through the water ultimately reaching the sky above. It is a symbol for awakening to the spiritual reality of life.
It is said that Krishna is the enjoyer, and Radha Rani is the expansion of his pleasure, therefore Krishna is the energy and Radha is the energetic, they cannot be separated, Krishna is in the ecstasy of Radha
"O Radharani, the queen of Vrndavana, with the medicine of the red lac from Your lotus feet, please bring back to life this person now dead from the bites of the black snake of not seeing You." (Vilapa-kusmanjali by RDG)