Complex sentence: Instead she finds a strange but welcoming woman, the seer Madame Serena (Rubinstein), who is stunned to realize that Louise is a reincarnated witch and an old friend of Serena's.
Split into simpler sentences: Instead she finds a strange but welcoming woman, the seer Madame Serena (Rubinstein). Serena is stunned to realize that Louise is a reincarnated witch and an old friend of Serena's.