I Need a Hug

If any mob is seen by Steve, or any other Gamers, they're kill in seconds! But being half creeper makes Kate special. She looks human, apart from the creeper sweater. But She LOVES TNT! It is like the love of her life, but enough of that.
When she was 14, she was stolen. Well, more like adopted. When she went to sleep in a cave one night, she woke up in a house the next morning. And guess who stole her. Steve. Yep. But she didn't mind getting raised by him because Kate didn't have any parents in the first place, (They kept blowing up). So he doesn't know that she's half mob, and she'd like to keep it like that. But the thing is, will she keep it like that?
And why is a wack-job murderer only keeping an eye on her?