In Switzerland it definitly would not count as rape by Anna (men cannot be raped here, only sexually abused (same max prison time, but rape carries a mandatory minimum of one year)). But she would be liable for the financial damage caused to Bob (child support, lost income, anything you can think of).

There is a famous case before the highest court, where a doctor, after forgetting to perform a sterilization a patient requested together with the caesarian birth of her second child, was deemed liable for the financial loss incurred by the existance of her third child.