I [20 M] got invited by a longtime friend [21 F] to go camping, just us two. What shall I do?

We've known each other for a few years now and she's always been a bit flirty with me, but never had she been anywhere near this bold. While I would love to go camping and I like her company quite a lot, I have noticed my friend does have a tendency to get more touchy and overall affectionate when the two of us are alone. Which on our potential trip would be pretty much always.

I have never found her flirting to be a problem and I even flirt back oftentimes, but with us two spending so much time together, she'd probably get even more courageous.
This is where I get a bit confused. What if she makes moves on me to the point where I begin feeling uncomfortable and feel forced to knock her off? Knowing her, I'm sure something like that happening would make the rest of our trip really awkward, which would be the last thing I'd want...

And am I just being paranoid about this? Maybe she really is just interested in going camping and chose me because of our similar interests and the fact that I can provide a tent and have some experience with camping. And bringing up these concerns of mine to her beforehand would only turn the whole thing weird from the get-go in that case...

Any help would be appreciated, and I thank anyone who's kind enough to share their opinion in advance!

I [20 M] got invited by a longtime friend [21 F] to go camping, just us two. What shall I do?
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