It was completely by way of coincidence. Aldrich just used the Eyes of Insight on Yasbel by pure chance and saw that her last name was different from the plaque on her office door.
The first time he said it, was to test the waters to know if she would really be affected by the reveal of that name. And the results exceeded his expectations to say the least.
He had no idea that she would be that rattled just by hearing that name and so he caught her in a trap.
As someone who was also hiding his identity and someone who has many secrets he understood that these secrets were very sensitive.
"So, let's talk about the details. Lets start from the beginning."
"Fine, you got me." Yasbel sighed and her distorted expression was replaced by a neutral one instead.
The fact that she could get her emotions back in check and accept her current situation so quickly made him even more wary against her.
"First part of the plan is actually to make a company."
"A company? What for?"