Spike's eyes follow her to the door, but he knew she was about finished with her favor for the day. His farewell nod has to be the least she's gotten from him so far; apparently that suggestion threw his whole system out of whack.

Rather than dwell on it, he throws his legs up on the couch, thwarting Ein of any prospect of sitting there in the process.

Instead, the dog trots over to Lucrezia, peering up at her before she's out the door. Making up for Spike's rudeness probably. Dogs are so strange.