Complex sentence: Helga tells Luke the story of an old friend of hers who was taken by a witch and ended up locked in a painting for the rest of her life, and explains how she lost one of her fingers during her childhood when encountering a witch.
Split into simpler sentences: Helga tells Luke the story of an old friend of hers who was taken by a witch and ended up locked in a painting for the rest of her life. She even explains how she lost one of her fingers during her childhood when encountering a witch.