What Gregor's mother's reaction when she finally sees Gregor?

When Gregor's mother first sees him after his transformation, she is horrified and unable to comprehend the sight of her son as an insect. Overwhelmed by shock and fear, she faints and retreats, unable to reconcile her love for Gregor with the grotesque reality before her. Her reaction highlights the deep emotional turmoil and alienation that the family experiences following his transformation.