So for those who were curious about the outcome...
I took my friend her new kit last night, and packed up all my accessories and sample-size juices in a lunchbox for her to try, and we hung out for a few hours. I showed her how to pull to get good vapor and warned her about getting liquid in her mouth and taught her how to refill cartridges and all the good stuff I learned here. We had a little vaping party.
We felt decadent and wicked getting our nic fixes in comfort in the living room, which she renamed "the vaping lounge". I showed her my new Janty Stick and we talked about how much fun it will be as we transition from vaping-to-replace-smoking to vaping-as-an-art in its own right. I promised we'd have another vaping party when my TW order comes in; we're going to try the Absinthe and Parma Violet flavors. I showed her some of the equipment I want, like the GG line, and laughed at myself because my first reaction was that I'd never be able to justify spending that much, even for the Slim, but then realized it was only two weeks' former cigarette money!
One of the more poignant moments was hearing her 5-year-old daughter say she liked Mommy's new cigarette because it didn't smell bad at all.
I ended up leaving both my dark chocolate and spearmint liquids with her (*sob*) to make sure she has enough prefills and refill liquid to see her through shipping times. I didn't have the heart to keep the dark chocolate anyway; she filled a cartridge with it for an after-dinner dessert vape (that won't affect her diabetes!), and once she started really getting the flavor of it, this amazed look came over her face, and she said, "I think I can really do this! ...Yeah, I can do this!" Then she just smiled, closed her eyes, and enjoyed.
I wish I could have recorded that moment for you.
She thanked me, but karma's already given me mine in the form of a week (and a day now) analog-free and not looking back. Here's the real thanks: neither of us would be at this point if it weren't for this forum, and communities like it; the commercialized stop-smoking ecig marketing is little more than a scam making cigarette-replacement seem like a grim necessity, but it's here that I found the information and advice that turn it into a delight that simply eclipsed the other habit.
Thank you.