I  feel like at the beginning she was just looking for a story to share and he had some drama that made him a character that would pull on all of our heartstrings. She also wasn't the one who brought up the topic of his brother, he was. She really messed up with the last question. He was already of the verge of tears and she kept on pushing the issue and he broke down. When interviewing someone you should be on the lookout for non-verbal hints that they do not want to talk about the topic.