"Not only that I am a demon..." he lifts a hand and brushes his fingertips over her neck, where the remains of the bruise he'd left the night prior linger. "But that I am apparently causing you harm by...feeding on your blood, to fuel my power."

It should be obvious from his tone that Skellig was (and still is) unimpressed with this lie. Sharing Karma and Light to benefit both of them is one thing. A sentient being simply taking, feeding off of another...absolutely not.