Her job is to be an entertainer. She's sexy, sexual, performs, and is a conversationalist.
She probably has thousands of followers because shes a fantastic model and is a form of media entertainment.
Just because you see her on cam does not mean you know her. As a camgirl, she will only show you the side of her physically and emotionally that she wants you to see.
OP, this is a classic Parasocial Relationship. Its very important that you seek councelling and learn more about Parasocial connections with live webcam models and live streamers.
Just because you talk to her online doesn't mean you actually know her. Cam models are performers. And while some models share details about their lives, it doesnt mean you see the whole picture.