The woman was a OS-tan!
I had been reading up about the anomalie called OS-tan.
They are girl representations of software & programs; in particular the Operating Systems.
The operating systems are: Windows (all the builds), Linux, Mac, Linspire.. and many more.
I was shocked when I saw the OS-tan appear before me in real life.
I stood speechless as the OS-tan looked around for a way to cover herself.
The OS-tan I was thinking of was ......