I don't like DMM and I'm not confident with youiv (is it a chinese premium site?).
mmmmm, yes it has their own premium feature. if you're looking for digital stuff those two are probably who has them. but if you're looking for her physicals, there are some alternatives, or you could convince group buy thread to buy them.
by the way I found 2 of her IVs here:
I'm sure there are some, but we have nothing to discuss.