The 54-year-old star's ordeal encouraged her to write a handbook for her 13-year-old daughter Gaia to guide her through life, reported Daily mirror.
"He was an old man with grey hair. And he took me behind a door and said, 'Would you like a sweetie?' I said, 'Oh, yes please,' but I had a funny feeling. He gave me the sweet and said, 'Will you give me a kiss?' and I said yes," Thompson said.
"So I went up to kiss him on the cheek and he planted his mouth on mine, stuck his tongue in my mouth and wiggled it about. I thought it was my fault - children always think it's their fault," she added.