Eliza did not say goodbye to anyone personally. She knows that one of the higher ups, one Doctor, is a traitor, it might be even more... The one who allowed the Actor and the imposter son to get inside the Lab is the mastermind.
Because Second Senior Brother could not have allowed Luis in without doing a background check on him.
'Or he did, but found nothing, and since he doesn't like to be asking for favors... To his juniors.' sighing with irritation, she scratched her head. Something out of ladylike behavior.
Leaving the lab, she found Vincent waits for her in front of a green Jeep. Seeing him, she ran out and threw herself into his arms without restraint.
He opened his arms to receive her.
The two shared a warm embrace, knowing that this is no place to show their PDA, because there is no one to do so.