Why does Ellen detain Jeth so long before finally sending him off to shad's?

Ellen detains Jeth for an extended period because she wants to ensure he is fully prepared for the challenges he will face in Shad's world. She understands the dangers and complexities of his journey and feels a responsibility to equip him with the necessary skills and knowledge. Additionally, her maternal instincts compel her to protect him and delay his departure as long as possible. Ultimately, it reflects her deep care and concern for his well-being.