Final answer:
Astrid's mother tells her not to touch the dead squirrel in the book 'Roller Girl'.
Step-by-step explanation:
In the book Roller Girl, it is Astrid's mother who tells her not to touch the dead squirrel.
This occurs early in the story when Astrid is on her way to roller derby camp.
Astrid’s mother’s warning represents a moment of everyday caution and parental care that contrasts with Astrid's journey of bravery and independence throughout the book.
Hence, In 'Roller Girl,' Astrid's mother cautions her to refrain from touching the deceased squirrel.