He knows the culprit

"I feel better," she replied maintaining her smile.

"Yeah, I guessed so. You look better. I guess it was all my fault you had to miss school yesterday since I was a very incompetent apprentice who could not chose the right fabric without your supervision," Eric said in a dramatic manner she found funny. "I am very sorry. I promise to do my best in the future."

"It's okay. A little outing or exercise won't hurt me," she accepted his apology. "Have you started making it?"

"Yes although I made a serious mistake which I am very embarrassed to say," he said with his head bowed in both guilt and embarrassment.

"What mistake did you make?" She was a little alarmed. She heard a hint of joke in his tone but she was not sure of it. She decided to play along. If he was serious then she will have to take up the work herself and if he was not serious then she will laugh over his serious joke when he tells her, "I was joking".