Frisk was unsure on what her mother really had meant when she had said that she either was mad or didn't understand her. So she looked back up at her, she was saddened.
"Mom I'm still sorry." ,she said to her
"I know sweetie, it's alright.", Toriel said.
She continued eating her food. Frisk was silent. She kept thinking and was unsure what to say next to Toriel. That was when, all of a sudden, Frisk excused herself from the table.
"I'm not hungry.",she said.
As she got up to leave. While Toriel and Sans were shocked from what they saw. They didn't know what Frisk had meant about not being hungry.