Which type of bike for me?

[newbieinPA]

Hey all -
I'm shopping for my first road bike - the goal being to be able to bike back and forth to work, etc. I'm super small (4'10, 100lbs), so my options are a little limited.

I wanted to get your opinions on whether I should consider a cyclocross bike and if they even make them small enough (I'd need a 43 cm frame). Since I'm small, I prefer the bikes make specifically for women - do they even make cyclocross bikes for women?

And does anyone have any brand recs for me? I won't be racing, but I'd like a decent quality bike. My budget is $1500-2500.

A little more information - I live in Pittsburgh - so roads/weather can be bad and there are lots of hills. I'm not sure that I'll even bike in poor weather, but thought I'd throw it out there. I'm really a road bike newbie (first time on a road bike was yesterday), so any advice would be great!

Thanks!