Celia thought deeper.

Those who lured the child to the Hemings were attracting her and Dominic here.

And she happened to have that diamond ring necklace most likely related to the Hemings, so if she confirmed that she and Lucas had a blood relationship, she would inevitably have to be involved in his mess.

The person who planned everything was calculating and even knew that Celia had the diamond ring necklace.

Dominic also guessed this, and his expression became ...