Well, of all the people Willow was expecting, Anya somehow wasn't on the list. Which probably meant she shouldn't be as surprised as she is to see Anya's transmission pop up. And she promptly shields her eyes because it just somehow doesn't feel right to be staring at Xander's naked girlfriend. Plus, Willow has a girlfriend! And Anya's just not her type. Bad situation.
[ visual ]
"Anya? Are there any clothes next to you?"