Was there ever a break in period? Did it ever feel tight or hurt the arch on the top of your foot? I almost thought about taking hair dryer / hot air gun to "mold" the pocket to the top of her foot, but I didn't want to damage something that might be sent back (and was).
I've seen her feet, they've never looked overly "arched" to me. Just normal, petite feet...
I hate to keep picking on you, but it seams you and her are about the same size, so you might be my best bet at getting to the bottom on it.