It's a girl visiting the city I met via Internet in a non-dating website so it isn't obvious there is attraction/interest.

She was staying for free at someone's place but didn't have the key so had to run before midnight.

My plan was to make a sexual move so I'd know if it was the case to meet her a second time.
But she had to jump on the tram at the last second without time to go for a kiss.

She said she'd like to meet tomorrow and then go dancing, but I don't wanna go to a club with a girl who's not romantically interested.
How can I make sure now, before meeting again, that I will not waste an evening?

What could I do/write?

Don't escalate over text. Set up the meeting, go clubbing Ffs stop being a pussy. If you can't deal with competition at the start of a fling/relationship you'll never be able too.

Initial hello is a hug and a kiss. Pull back and look her in the eyes with a cheeky smile. Touch her and stand near her like she's already your girlfriend. Look at her in the eye, keep you bodies close together, kiss, escalate more, sex... Easy.

Get a red light at any point, back off and give her a cocky smile. Show her you respect her boundaries but her stopping your advance doesn't affect you.

Don't try and escalate over text. That's stupid. Sex text AFTER you've fucked her.

I agree about the sexting, I was just afraid I was going to get that suggestion .

The club thing is not because I'm afraid of the competition, I'd rather go there and meet new people, or meet my pals, rather than a person I'll never see again who might not be interested in me.. You know what I mean, was just thinking about a way to know and/or raise my chances without having to tie myself for hours..

I don't know, like I might spend the first part of the evening with her and then meet a friend, she'll probably sleep over anyway as she's looking for a place to stay, so at least I'll have someone I enjoy the company of if she's not interested...

Who says you can't hit up other girls at the club when she's there? If you can't escalate and you are at home it could get awkward. At the club you can back off and open other girls in front of her (and use her as social proof). You never know, she might "all of a sudden" want you again too.

Do whatever will be the most fun, you can always try escalate at home. If it goes well, night of sex, if it doesn't, hit the town and find more girls. You have plenty of options don't over think it.

Yes you're right.
BTW, you say "initial hello is hug and kiss", do you mean kiss on the lips?

I've never tried this one but always been curious and thought I should give it a try, just never had the nerve or didn't want to risk ruining a possible good interaction.

Did you try it? How would you say it worked for you?

No, a kiss on the cheek and a hug, European style. Although if you walk up to her confidently and hold eye contact you can go for the real kiss.

And yes, this works for me. You should do it all the time, even for opening a set.