Framed up

If the poison was from the food or drink, it must be someone who has access to the kitchen. He or she must have known what food or drink was to be served for the queen. Could it be possible that there is a spy from the royal family's enemy here in the palace? Because if you look closely, an outsider can't go to the kitchen without getting noticed. He or she wouldn't also know what food or drink was to be served to the queen. So the one who did it must be a servant in the palace.

My thoughts were only disturbed by consecutive knocks on the door. The court lady opened it. When I heard the nervous servant say "Y-Your Highness!", that was when I turned.