"Glad to hear that my lady." Duncan said. "I was thinking the air in the herbal garden is the best at this time of day," he suggested. 

"After I make send one of the Royal guards to check on the dining room and kitchen. I was going to do that myself but I found a more urgent matter to attend to," he said with a wink. 
Any excuse was good enough in his opinion and his royal Guard was more than adequate to inspect the safety. It was a good thing he'd trust more in his guards then insisting to do everything himself. 

when he noticed one of his Guards on his round Duncan instructed him to check on the kitchen and the dining room as well. Duncan walked with Madeline to the herbal garden. He was glad that he found a way to spend a bit more time with her. He had been disappointed his earlier encounter with her in the garden had only been so briefly.

"Will you attend dinner with our guests too?" he asked. 

Duncan himself wouldn't attend as it was for the Princess and her suitors but having an extra pair of eyes and ears on the inside beside one of the guards would be a good thing. Maybe he would ask if Elaine wanted to stand guard but there were enough to pick from.