Our parents remarried and I suddenly had a stepsister — an adult, but the kind who can't say what she thinks and can't tell you no even when she means it. I messed with her nipples every single day, and her sensitivity went through the roof until she couldn't function without it. In the end she started coming to me. This is the record of a woman too timid to voice an opinion learning to ask, out loud, to have her nipples touched.