You guys ever play Parasite Eve 2? In the first part of the game, there is a book that you can find inside a chapel. It has several quotes concerning parasites.
Take slight comfort in the fact that the Reimus probably starved to death after this, the mother probably couldn't hurt by herself. Or maybe this was just hallucination of Marisa's? One so real it killed her?
There is a flaw in Reimu's logic, she can't own anything when she isn't even owner of her own life, i mean, we all know that Yukkuris get owned by everything after all! their lives stopped belonging to themselves, this deibu's included, any of the owners can come and reclaim it at any moment, be it a mister human, a mister animal, mister nature, etc. Everybody owns yukkuris but the yukkuris themselves! ^__^