A bit (or maybe really) late on the topic of Seija's difficulty, but I found her screen-flipping cards easy as well, at least once I got used to the controls (vertflip being the harder one because of diagonal bullets making it harder to avoid using up/down). Her last spell is really easy once you understand how it works and stop panicking at the rotated screen. Well, on Normal at least. Her midboss spell isn't a problem either, but the arrow spell and all of her non-spells are kind of a pain -- including her ones from stage 6. She might not be as deadly as Orin, but I don't think I'll ever forget that she's still a stage 5 boss.
As for the translation patch, I'll wait until the patch from the usual people is released, unless they gave up because of this new patch. I don't know, the idea of a self-updating patch is too revolutionary for me. patch patch patch.