30 and single/no kids... unless she's VP at a bank or doing very well in medicine, there are MAJOR red flags on this one.
She will be the MASTER at highlighting her strengths and hiding the crazy by this point. Look out for things like "I'm a 3-hole girl" after 2 beers and a "confession" that she's into girls and loves 3-ways too, once she's comfortable in her relationship. Gentlemen, this is the ol' bait-and-switch. You make her follow thru now, or you run. No other way about it.
To be fair, when you say "single", you mean "never married".
Because there's lots of technically single women in their early 30s who are recently divorced, without kids. Happens a lot. Him and her spend their 20s building legacies in the corporate world (for whatever that's worth), only to realize they've grown apart, had a tryst or two in the office, or one refuses to put their career on hold or change it so the other can (i.e. he gets re-located from SF to Cleveland, and she refuses to drop her six figure job just so he can become Sr VP of Supply Chain for P&G out in Cincinnatti.)
So she stays in SF, they divorce (possibly acrimoniously) and she's embittered and looking for something new. She spends too much time at work, just lost half her potential 401K (her husband and her split it 50/50), and needs to live a little.
She's not crazy. She just works too much. She is also not ready to repeat the mistakes she made with hubby #1. That can be good (i.e. more adventurous) or bad (i.e. more demanding). Tough to say.
But there are lots of near-wealthy recently divorced 30-something women out there without kids. But some of them want kids bad. Doesn't matter what your job is...the biological clock ignores no woman.
This, by the way, is not my personaly experience. I showed this thread to the wife last night Rob, and this is what she told me. Beats me if she's right. But she says she has lots of co-workers at the office who are like this. Probably hyperbole, but you never know.