Complex sentence: This situation was recorded by Andrea Espinoza, who went to the show with her daughter, and said she felt very bad to see the girl singing while she was sick and that was the reason why she had decided to publicize the video.
Split into simpler sentences: This situation was recorded by Andrea Espinoza, who went to the show with her daughter. She said she felt very bad to see the girl singing while she was sick and that was the reason why she had decided to publicize the video.