Sonya was only able to accept the invite because she was leaving for London the next day, and told her superiors that she needed this day for final preparations.
In reality, she needed to get away, with the Joker running around making threats, if she didn't get away soon she'd hunt and kill the bastard herself. But for the sake of the baby, she had to control herself.
She expected Shang to question her when she told him of her plans, even more so when she said it was Henry the VIII she would be with. Sonya assured him that she knew who he was and nothing's going to happen save lunch.
Sonya arrived in her military greens-both out of habit and as she was technically still on call-blinking at the sight of the paparazzi. She took a deep breath, fighting her way through, glaring at anyone who dared ask her a question.
She made it to front of the restaurant, telling the hostess who she was and where she's excepted. The woman led her to the table.