Does Billy's mom stop worrying about Billy in the book Where the red fern grows?

No, Billy's mom never completely stops worrying about him in the book Where the Red Fern Grows. However, as the story progresses and Billy becomes older, she begins to trust him more and allows him to pursue his dream of hunting with his dogs.

In the book "Where the Red Fern Grows" by Wilson Rawls, Billy's mom does stop worrying about him to a certain extent as the story progresses. Initially, Billy's mother is concerned about his safety and well-being as he embarks on his hunting adventures in the Ozarks. However, as Billy proves himself and becomes more responsible, his mother becomes more supportive of his pursuits. She comes to realize the importance of allowing Billy to follow his passion and learn valuable life lessons through his experiences with his dogs, Old Dan and Little Ann. While she may still have some worries as any mother would, her trust in Billy's abilities and judgment grows over time.