Taking one question at a time:
1. My question is whether to get the standard B-17 or the women's model.
The main differences between the standard and women's models are that the women's model is wider by 7mm and shorter by 35mm. Measure the width of her current saddle and compare with the width of the Brooks. If she likes wider saddles in general, she might want to go wide with the Brooks (but certainly don't rule out the standard B17). Wider saddles also go better when you're more upright (sitting on the saddle rather than leaning forward). If there's still any question, you already have a B17 on hand, so why not swap it to her bike for a day, dial it in, and see how it goes? She's not going to un-break the saddle for you, certainly not with a day's ride.
2. Also, go with the cut-out or not?
If that certain sort of pressure isn't an issue with her current setup, I don't see the need to do the cutout to solve a problem that doesn't exist. Even then, if she doesn't like the non-cutout version because of other reasons, I don't know that the cutout version would be any better for her.
3. If we went to a shop that does the Specialized fitting with the "memory foam" stuff, what would that tell us with regard to a Brooks?
You'll have to dial in any difference that any other saddle presents, Brooks won't be any different. At best, a fitting gives you a rough guesstimate of what might work for you. You'll still need to use your personal preferences and experience to get the exact configuration that you want. (See http://www.peterwhitecycles.com/fitting.htm
One caution: I can't find the article now, but Sheldon Brown said that, in his experience, women either loved Brooks saddles or hated them (with the grand majority hating them). Saddles are really a personal preference sort of thing, and Brooks saddles are not for everybody.