He Was Missing Her
She worked hard to learn and excel in all kinds of work, including knowing the Underworld, just for the title of the Queen. She knew she was the perfect match for Henry, she will prove that since her family owned an influential business that could be an asset to his work by its connections.
And her hard work paid off when Henry himself agreed to this engagement, it was the biggest day of her life.
The Mafia King who never bothered with other women accepted her as his future wife, he was cold-hearted, and women were never his priority. What more could Sonia ask for, it was all which she want.
Though his assistant Roger rightly said that Henry neither initiated contact with her nor responded to her messages after that time, she didn't mind, she was waiting for her good time. She accepted that as a part of his personality he liked to be quiet, and talked less to everyone like his father.