The info I don't have is tone and that could make all the difference. Is their humor/irony? Is she crass?
It sounds like we are off to a bad start but I would need more information. No sense just storming out of the room or whatever. I would explore a bit.
Is she asking how much I have in my pocket because maybe she has an idea for some form of entertainment for that moment and she only has enough to pay for herself? That's not so bad. Is she asking how much I have in the bank and if I am secure for retirement or, indeed, wealthy?
I would have some admiration for her directness. If that's a deal-breaker issue for her then why play games and beat around the bush? Maybe she has met a string of guys who are broke-ass mooches and she wants to nip that action in the bud.
If it turns out she is just very superficial and tacky then she would not be the sort of person I am looking for. If the point of her question is to find out if I'm rich because that's what she is looking for then, me not being rich, would not be good for her. Good to find out and not waste a lot of time.
And I would enjoy the coffee together (or whatever we are doing) then go our separate ways.