I can only assume but the first few pictures where probably coerced and after wards she was threatened to send more or he would release them. That definitely counts as forced. She was only 11 and this thing went on for 3 years. It's definitely not just "look what you made me do".
You can force someone to do something without being physically present.
That's a misbelief, most lottery winner do just fine long after winning. We just only hear about the ones who go broke because that's report worthy.
And it's almost impossible to go broke with winning 1 billion. Even if you are only left with "only" 500 mil after taxes, and you manage to lose 99% of that, you are still left with 5 million. Which is still enough to have a comfortable life.