Complex sentence: Madame Xanadu also gave Timothy Hunter a reading, helping him along his path as an emerging sorcerer, and confronted Tim's companion John Constantine, whom she believes stole a magic artifact called the Wind's Egg from her.
Split into simpler sentences: Madame Xanadu also gave Timothy Hunter a reading, helping him along his path as an emerging sorcerer. She also confronted Tim's companion John Constantine, who she believes stole a magic artifact called the Wind's Egg from her.