Margaret was smart, smarter than she thought Alex gave her credit for. Frankly, she thought the boy was a damn fool for allowing her to keep the vial, and she even managed to pass it off to her bodyguard before he was dismissed, to go and get it analyzed.
Of course, despite being a meat head playboy when he entered this world, Alex had quickly grown as a result of the system, and sure his abilities were gone, but the growth of his "base attributes" wasn't gone either.
The clock was ticking, and he frankly didn't have much time left to win the heart of the mature beauty by his side, or the mother of the princess he had stolen, and the prince he had killed.
So he had to shoot his shot while he had the chance, escorting the "lady" into the venue under the guise of being her security guard. He took some liberties to get close and whisper something in her ear that caught her off guard.