All Earth's Children characters belong to Jean Auel. All Harry Potter Characters belong to JK Rowling. I just wrote this for fun, not profit.
the capture
All the next day he avoided her, saying he had responsibilities upat the castle, and left her alone, hoping she wouldn't do anything foolish like wander back into the woods. As they ate dinner that evening, and he was trying to find a way to persuade her to go to Dumbledore, they heard a commotion outside. Hagrid got up and went out the front door. Latie could hear his voice and others, and she tried to hear what they were saying. Her command of the language was not good enough to allow her to evesdrop on people speaking rapidly.
As she stood listening, she came to a decision quickly. She wasn't getting home like she needed to, and perhaps it was time to resume her search. Hagrid had said he knew a person who could help her. It was time to take him up on that offer.
Latie gathered her courage and opened the door wide, so she was standing in silohuette against the light inside the hut. From the light spilling out into the yard, she could see three young people and one older person. The girl was dressed like she was, so she knew they were from Hogwarts Camp. They must not be used to people on a Journey, for they all stared at her. Remembering this was Hagrid's hut and she was Hagrid's guest, she walked down the steps and confidently strode to the oldest stranger, smiling and holding out her hands. She took his hands when he didn't hold his out to her, and found herself looking into the blackest eyes she had ever seen. "I, Latie of the Mamutoi, of the Hearth and Camp of the great cat, daughter of Nezzie, wife of the headman Talut, brother of Tulie, greet you."
Not only were his eyes black, but so was his hair and clothing. He looked down at her with an unfathomable expression before looking at Hagrid. Latie let go of his hands, wondering. Maybe he was someone like Frebec, whose ties and affiliations were not worth mentioning. She, too, glanced at Hagrid, who came to her side and said quietly, "Latie, this is Professor Snape."
Ignoring Latie, Snape said, "I won't even ask why there's a muggle girl in your hut wearing a Hogwarts uniform. However, Dumbledore needs to know about this."
Hagrid spoke to Latie, "You know, Dumbledore may be able to help you get home."
Latie stepped away from the two men, walking slowly towards the hut. With rising irritation, Snape realized she was actually deciding whether to accompany them back to the castle! He thought to challenge her, then realized that she wasn't a student, and he really didn't have any authority over her. He could try to intimidate her. There were the other students watching the whole affair, and discipline had to be considered. But he was saved from having to exert himself when Latie stopped and strode quickly back to the waiting men.
"Yes, Hagrid, I go." She paused. "I not come back here again?"
"No, Latie, you wont."
"I get my clothes"
Latie shut the door of the hut behind her and changed into her beaded tunic, leggings and lion teeth necklace. She rolled the Hogwarts clothes into a little bundle and tied them with twine and slung them over her shoulder. Then she picked up the spear and went outside, ignored the stares of the strangers as they saw her in the clothes that marked her as a woman of high status and high bride-price, and took her place between the two men, nodding briefly at the young people following behind, as they climbed the hill.