Theory time (just because I was bored); At first Kati introducing the ratman to her mother and twin brother (the only family members she has good relationship with), then the stream right after that she randomly asked the chat "would you introduce me to your parents?", suggesting she wants to (or planning to) get to know the ratman's parents.. considering the question he is not too eager about it.
Moving on; About a month ago we had the period on cam incident, now a tampon. Now, the time between these events is about time for a normal cycle, which leads me to believe her birth control implant maybe not functioning anymore.. maybe she is opening gates that she said she never will, having a kid with a man what can keep that man on a woman's side for or very long time, or make him pay child support.
Conclusion: Kati wants to settle down with the ratman; she found the perfect man, rich, obedient, has a bunch of friend and connections in the streaming world and to top it all, he owns a site where she can do her e-thot stuff, the only job that she really knows.
I'm guessing they fight a lot, mostly because Kati is a bitch, but Kati will never break up with him (unless he loses all his money) because he is all she needs; and the ratman will never break up with her because,
as much as I've seen of him, he is as much of a simp as any other in her chat room, he will never have the balls.
But that's just a theory