Presence

The kitchen maids were surprised at Alexia's presence. Were they in trouble? They thought. 

She assuaged their fears. "I want to see Arnold."

She called Arnold, the head of the kitchen privily.

Unwrapping a parcel, contained a herb that he had never seen. 

"I need you to put this in Alden's food." 

"He has been sick for a while and he's refusing to take his medication. He needs to rest, lest he breaks down." She faked concern.

Arnold looked at it skeptically.

She laughed in mockery.

"Do you think If I wanted to poison him, I'd employ your services?"

"I wouldn't show my face."

It made sense to Arnold, she wouldn't want to show her face, if she wanted to harm Prince Alden.

"Ok, ma'am. Consider it done." He assured.

Alexia walked away smiling evilly.

Take that! Alden didn't know what was coming for him. 

It was masked wolfsbane.