I wonder if more atrocities will follow. Assuming it actually is her and we're not just making assumptions because she's different and strange.
Well she does have fangs
Actually, I'm wondering why no one's noticed her fangs... we've never seen a human with fangs before, have we? If vampires are indeed factual, the one person who ought to know that is Tish, and yet she told the police that Liara was bitten by "an animal"... maybe she's worried she'd be on the hook?
"I love the sheer perversity of being a vampire [in Oblivion]. If you go around drinking their blood regularly, everyone is really nice to you... if you don't, they start to get really shirty."