Some models to check out with 650c wheels and slacker (normal) seat tube angles:

Litespeed Bella XS, 74 STA
(Merlin used to make the Camena, which in the XS had 650c wheels and a 73 or 73.5 STA, but they seem to have stopped making it for 2009)

Terry Fast Woman 16" & 17.5" both have 74 STA

As someone else mentioned, Cervelo's RS has a 73 STA and 650 wheels in the smallest size. I think that size is probably too big for you though, as it'd be the size I'd get at 5'4".

If you're considering throwing down for a Ruby, you should at least consider a custom builder like Luna or sweetpea.