"I was thinking I'd go see him in person," says Bella. "Sherlock, Tony, either of you want to come along?"
Charlie is in his house. The invitation thing, while having been previously useful for comforting Charlie about his daughter's vampire boyfriend, went with the other inconveniences, so Sherlock comes along without complication. "Hi, Dad! I am okay! Sherlock found someone who could help me. Complicated magical things happened and now all's well."
"Bella," breathes Charlie, and he gets up and hugs her tight.
"Complicated magical things," says Bella helpfully. "He can do that now. He will not be doing anything nefarious."
"My already negligible nefarious tendencies have been drastically reduced," he agrees. "Because of the complicated magical things. Also, I can now walk around in sunlight without catching fire, I'm quite looking forward to that part."
"...Bella, you have school -"
"Complicated magical things, Dad, I will appear at school just fine, promise."
"...Right."
"Have you been sufficiently reassured that I am okay, so that I can go do other stuff?" Bella asks. "I need to go warn a person about a thing, and I also need to talk to Giles so that he too can be clear on my being fine. Can you handle my being not legally dead, I'd find it potentially inconvenient to be legally dead."
"...I can do that. Since it doesn't look to me like you're dead."
"Thanks, Dad, I love you," says Bella with a brilliant smile.
Now! Where might Giles be? Because now that's where Bella and Sherlock are!
"Hi, Giles! I am only technically dead!" says Bella brightly.
"Mint powers," says Bella gleefully, unspilling his tea for him with a wave of her hand and a triangle.
"Since I did, technically, die, I am going to go warn the next Slayer of what's to come before your old friends find her," Bella says. "But I don't think she's got much to worry about. I am awesome. Also the form of technically dead I am makes me invincible. It's kickass."
She is in a whimsical mood, so she does this by briefly conjuring a fairy-godmother sort of wand and tapping him on the head while she applies the hex. "There you are. Will you want anything else in the next little while?"
"Sherlock, do you want to meet the new Slayer too, or go catch up with Tony?"
The new Slayer, wherever she may be, gets a visitor.
The new Slayer is lying in bed with an open calculus textbook propped on her stomach and her feet halfway up the wall, drumming her fingers on the book's spine while loud rock music plays in the background. She is wearing Captain America pajama pants and a plain white T-shirt.
"Please don't panic," says Bella, first, "I'm here to help."
She lowers the textbook until it's open flat on her chest.
She looks at Bella.
"Okay, talk."