Government chip stopped him from being able to feed on people.

[It's probably not so helpful, and also not so important in the moment, so she just shrugs.]

It's kind of a long story. I'll tell you about it sometime.

[And there it is, another glimpse of the sometimes unusual behaviour as though the needle on Tara's record player has suddenly gotten stuck. Willow gives Faith a concerned glance, and takes a step towards Tara.]

Tara? Are you okay?