Thor watched with a frown as he watched Loki cough to the point of throwing up. Riza didn't looked pleased and looked rather upset when she saw Loki throw up. She was unsure what she could do at the moment besides what she was doing already. Thor rubbed his brother's back, trying to sooth him as best as he could while Riza thought about what she could possibly do to help the god of mischief get comfortable. 
After some time though, the god of thunder stood and faced both Loki and Riza. "I must be off if we are to have Loki well soon enough. Loki, please do not be stubborn while I am away. Let Riza and her family help you as best as they can. Can you promise me that?"