Katherine
We have a lot of history. Most of it pretty unpleasant. Things were actually starting to get better between us toward the end there, but now? With Buffy around, I really don't know what's going to happen. It doesn't seem like it can possibly end well.
Well, I'm one of the oldest and strongest vampires in my world. Besides, I've managed to kill a lot of things that should've killed me. If you need to get out of your apartment, you're welcome at mine. I don't know if vampires from your dimension can get in there -- in mine, we don't need an invitation to the homes of non-humans -- but it might be harder for him to find you. How long has been chasing you?
You can't blame yourself for the things you've had to do to survive this guy. That's a slippery road and believe me, it's not one you want to go down. Once you start blaming yourself, it's tough to stop. The guilt will consume you if you let it.
Sherlock Holmes is here? That's bizarre. I guess no more bizarre than anything else in this town, though. I take it he's wrong about your business?