Eric lets her get everything out, not interrupting with any 'uh-huh's or whatnot. When she finishes, he sits for a few moments longer (during which he most certainly doesn't wish Bill stayed a crispy fried dick) before saying anything.

"So you're still not up to the present yet." He looks her over appraisingly, noting her nighttime attire. "Are you at all injured?" Most of what she had said wasn't of interest to him. After all, the Bon Temps murders had obviously been the work of a human and thus not on his radar. Sookie, on the other hand, was.