I knew her when she was here before, but she doesn't remember it. Seems like where she's from, knowing vampires isn't the friend-filled experience it was for you. Someone who's not a vampire to talk to about vampires might be what she needs.
[ as socially fail as angel can be, he's also one of the most observant people in the world -- a blessing that becomes a curse to others when he's soulless and uses that perceptiveness against people. ]