What a fun thread... You are probably totally overwhelmed by now, but I'll throw something in.

I know she waaaaaants a blue Diva. It's a gorgeous bike. However, she should try a bunch of bikes out to get an idea of the right geometry. I tried a bunch of bikes, figured out what worked number-wise, and bought a bike sight-unseen that I hadn't tried based on the measurements. It worked out great for me. The key is to try at least 5 bikes with different geometries and take notes on the comfort of each. Then, buy a bike similar to the comfiest you tried.

All that said, sounds like her needs are quite extreme. The Madone geometry looks better at a glance than the Orbea. For a 521 top tube, it has a centimeter longer seat tube and a half-centimeter longer head tube. Still might be too compact for her, though.

The very best-fitting stock bike for a woman with long legs vs. torso are the Terry Isis bikes. 521 Top tube, 546 Seat tube, 805 Standover. If her needs are what you say, that fits the bill perfectly. Unfortunately, I don't think she'll like how it looks if she likes Orbea so much. That gets you back to thinking about custom.