I dislike Trump and Melania as much as anyone (even though, apparently I share a common ancestor with him). However, just because you dislike someone doesn't mean it is OK to behave unethically towards them.
Just because he is a slimeball doesn't make it OK for prostitutes to blackmail him. Let's face it, she is a gold digger.
Just because you are have scammrd loads of people and have reneged on an at leat implicit promise of a slot on your TV show, and you have allegedly threatened the porn star that you slept with under false pretences, it doesn't mean that you should expect them to try to void a possibly legally dubious contact.