Hmm... I don't remember the bit about Mami being resistant to soul gem erosion off the top of my head. I'll have to go back and check. That said, what you've been saying does make sense, so I'm going to change my guess on Homura's wish to her having wished to travel back in time. This would explain how she seems to know too much, as well as her apparently time based powers.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.