Andrea already prepared the necklace a long time ago when her son started dating and it's the right time for Stanley to give the necklace back to Luna. Luna gave it back to her after Stanley left her. It's a sad story. Andrea like Luna so much that she had loved her like a real daughter. She's true and she knew that Luna can't cheat on Stanley because she had given everything, she had to him.
She doesn't exactly know what happened, but she make someone guard her everywhere she goes. Andrea is wishing that they would get back together and it happened because Steven showed it to Stanley.
"Now, girls you look beautiful!" She clasped her hand and admired Freya and Luna. "Oh, Freya, stop frowning. You are beautiful."
Freya exhaled and glared at the dress that she's wearing.
"You and your son are the only ones that make me wear a dress." She muttered. Andrea laughed.
"Good."
