He sees her coming before she takes that seat next to him. And while he most certainly isn't adverse to her company, his own emotions are still very, very raw from the Locutus violation. Jean-Luc does not like to seem needlessly vulnerable. He doesn't like acknowledging the trauma that came with assimilation, the memory of all the people Locutus and the Borg had once used him to kill.
So he sits just a little straighter, back a little more rigid than normal, shoulders squared, the epitome of a Starfleet Captain, completely in charge of himself in body, mind and spirit. His lips just barely curl into a hint of a smile and he nods a greeting. The tea cup in his hand is steady. Hands once again strong even if it's taking a lot of energy to make it so.
"Of course." He honestly thinks he knows what this is about. And so he plows ahead with the intention to ease any concerns he thinks that she might have. "As anyone would be, I'm certain that what happened has left you with some concerns. But I can assure you that I am not Locutus. I am Jean-Luc Picard, the same man you knew before all of this... mess."