I've put off asking this question for some time but now I feel like I have to.

My friends got a daughter that has a big crush on me for quite a long time. I've tried my best to downplay it as much as possible.

The problem is that she's slightly older now and has more independance. She's recently knocked at my door with her friends. Of course, I was cordial and said hello and was polite but I placed myself between the door at all times, not giving a hint that they were invited in.

The problem is that she makes up bs to get her way. She pretends to be sick so she can stay up and watch the game and stuff like that.

I predicted that she would start knocking at my place and that's happened exactly when I thought she would. Now I can predict that she'll make up an excuse to be invited in. Perhaps she'll fake sickness or something. I'm very worried that she might make up some bs to make herself sound cool to her friends but actually gets me in a fuckton of trouble.

I don't want to let her in but I also don't want to be an asshole about it because she's so far done nothing wrong.

I was wondering about if she does come up with some bullshit reason to be invited in, I'd probably phone her parents to let them know where she is.

I was wondering though what other precautions can I take?