There's something you both need be aware of. Lorna, I don't know how much I've told you in your time, but I was told today that Angelus is here. Not Angel but Angelus. He's already killed a couple of people and left a note for Buffy with one of the bodies.
I don't think I've told you much about him, Cisco, but he's a vampire from home that I've known for a few years. Normally, when he's just Angel, he's someone you want on your side and is one of my best friends. When he doesn't have his soul, he's extremely dangerous. He's sadistic and ruthless, and he uses the relationships Angel has with the rest of us against us.
If he knew Buffy was here then he probably already knows I'm here too. I know what to expect from him, but I don't know if he knows about either of you. If he's with you, Lorna, he'll probably be able to tell that you're my daughter, and that will only make him more interested in you.
They're working on a plan to try to re-ensoul him, but until then, you both need to be careful. Vampires from home can't go out into direct sunlight, and they don't like fire or holy water. I'll make sure you both have some vials to carry with you. A wooden stake to the heart will kill him. We want to try to capture him in order to give him back his soul, but if it's you or him, don't hesitate.
Please be careful going out, especially at night. He's incredibly dangerous.