Hmmm... This is a predicament. She seems like she's pretty indignant.

"Great Sage, can I copy this illusion?"

//Affirmative. You just require a basis for it.//

"That so..."

Rimuru thought for a moment before snapping his fingers. Reaching into his hand, he pulled out a glowing piece of magic ore, the prismatic ore refined and glowing bright rainbow.

Leaping up into the air, he landed lightly on the chandelier and used Analyze on the crystal Amelie without absorbing it, before leaping down and offered it to Moon. "There you go!" He said with a grin as a second illusion of luvdiscs sprang into being."

Amelie the OP slime copied your illusion to please Moon.