Answer:
Reminded her how young she was to talk back or say anything to her teacher.
Explanation:
The incident with the sweater affects Rachel so powerfully because it reminded her how young she was to talk back or say anything to her teacher. When Mrs. Price insisted that the sweater belonged to her, she couldn't hold it any longer.
She cried her eyes dry out as she knew the sweater didn't belong to her but was forced to put it on. The incident made her wish that she was 102 years old so that she could say anything to her teacher.
