I've had to sift through quite some interactions since Aurélie and Sabrina entered the Gala, which I susppose is only even more confusion to our dear [@WhiteAngel25], so I made a small chronological timeline of what happened there, so it may be easier for you to jump in, my dear! 

- Auri and Sabrina walk into the main gala area
- Nick and Cosette approach, Nick calls out
- Aurelie greets Cosette, Cosette hugs Sabrina
- Nick compliments Sabrina's dress
- Thierry arrives, and mentions he'd spoken with Theo
- Vandelez arrives, shakes the 3 parent's hands
- Thierry and Nick depart for a dance
- Vandelez hands the 3 ladies a box with a bracelet (shady)
- He leaves, Aaron arrives, compliments the dresses of the girls
- Aurélie interacts with him, Cosette shows him the bracelet and asks about the results of her scan

Hope that helps!