How can Anna and Aiden have something in between them?
Even if what she thought she was hallucinating is real, Anna might be comforting a fellow colleague.
She just placed her hand on Aiden's hand. Nothing much!
She must be speaking to him about Kyle and the situation might have demanded her to do it.
"She is my soon to be cousin in law. I shouldn't be overthinking." Brianna thought.
After this encounter, Aiden didn't stay for long. He could see that Brian (Brianna's alias when she is cross dressed) is utterly shocked because of what he saw now.
That means, Anna hasn't told Brian about their past relationship. Aiden is already aware of Anna's familiarity with Allen.
And Allen seems to be pretty close to Clinton and Brian. That implies that Anna should at least be acquainted with them if not close with them.