@Spidrift: Tracy didn't know anything about the victims, until Dusky told her why Tiffany was there.
Maechris wrote:- Humans have the natural right to exert defense against monster's feeding mechanisms, particularly if they're debilitating or lethal.
- If she can only feed by killing humans, this is automatic tragedy and a case of orange and blue morality, but point 2 still applies.
I wouldn't consider Marine tragic in the third instance you mentioned. That'd be someone like Bosco (
'Phantom Quest Corp.'. For those of you who're unfamiliar with the series, here's a brief rundown:
He's a reformed vampire, who's trying to kick the habit in order to be with Makiko (19 year old college freshman). So he put himself through hell by conditioning himself to withstand crosses, garlic, and direct sunlight. Plus, he only feeds 4 times a year at only 200cc's per quarter. And, for the most part, he's succeeded.
Except, it's taken a severe toll on his health, because it's left him anemic. So much, that Ayaka was able to overpower him in seconds, because he exerted himself and fainted. Whereas if he fed normally, like other vampires, he wouldn't have that problem. But he's content to continue to starve himself and let his health decline, so long as he can be with that girl he likes.
That's tragic. Marine maintaining a healthy diet because she has to, isn't. It is what it is: she's gotta eat. Assuming there isn't an alternative food source for her.