Her boyfriend got her pregnant, and so did the father.
Guys are capable of telling a ton of lies just to get laid. And naive girls like these fall for their traps because they lack information and are afraid of losing their boyfriend. This redhead virgin lets her boyfriend ram it all the way in, and even though she's a little scared, he tells her everything will be fine and there's no risk of getting pregnant the first time. Obviously, it's all a lie, and two weeks later, she's pregnant. The girl is a bit overwhelmed and doesn't know what to do, but luckily, her stepfather is always there for her, and he has a solution. He can take care of the baby, provided she obeys certain orders.