She's going to get fingered. At least.
Probably not...yet.
But yeah, she has hormones too. At some level at some point, she's going to want to explore sexually. CPA probably doesn't want her to go to college completely unprepared for the pressures she will face there.
Intimidation and threats does not prepare a young adult for these pressures that she will face. CPA, his wife, and their daughter should ideally (IMO) have an open, loving atmosphere at home where no subject is off the table. Ideally, she sees her parents in a loving, stable relationship and sees them maintaining a romantic atmosphere X years into marriage.
Ideally, she can come to them with any question about any concern or topic, be it religion, death, politics, finance, sex, drugs, alcohol, friendships, relationships, life goals, aspirations, dreams, etc.
And ideally, CPA and his wife have empowered their daughter with knowledge about all aspects of sex: the basic mechanics, puberty, hormones, chemical imbalance, birth control methods and accessibility, mood swings, abortion, the economics of pregnancy, relationships, love, sex for procreation, sex for fun, sex as a tool of manipulation by men, sex as a means of getting love and attention for women when the man has no intention of providing either...and even, dare I say, orgasms, masturbation, pleasure, and the fact that it's HER body of which she is in full control and that anything sexual is something that happens only when she wants it to.