I matched this girl on Tinder. She's 19, I'm 29.

We flirted a bit and talked about meeting for a drink. She told me she's not a "fan of planning" and asked if it was okay if she can just hit me up. We tried to schedule three times but of course, with such short notice, it's just very unlikely to actually be able to meet.

Now she basically gave me an "ultimatum" saying that she has time next Thursday but if it doesn't work, we should "probably give up if that doesn't work out".

Don't want to submit to ultimatums, but I would like to meet her anyway. Any advice?

------ UPDATE ------

In case someone finds themselves in this situation: in the end, I said something like "You know? You're right. If we don't meet by this day at this time I'll unmatch you myself, no worries". We met, had a couple of drinks and went back to hers. We met a couple more times after and that's it.