Umm, why can't you set up a separate pick-up time for her. It would still be a surprise when you take her to the Apple store. They never mention that you can't pay for it, just that she would have to be there to pick it up.
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I doubt that would slow down scalpers. Just means they'll have to make multiple appointments over a longer period. It doesn't say that you can only ever get one, just that you can only get one at a time.
The plan was to get pick them both up on my way home and surprise her at my place. Yes,I could take her to the store. Most likely I'll just have my friend order hers for me.