i have never known of a tarot spread that used all 78 cards. I've been reading for a long time. The most common are 3-5 spreads, celtic cross or the reader may have their own spread. For Lenormand, although you can do a grande tableau, most readers use a 3 or 5 card spread.
Her bio she says she lays out all 78 cards, I remember getting an in person reading many years ago and the guy used a lot of cards, but not the full deck. And that was a fixed rate and he took a while to read those cards.
I'm really curious about the reading and how long it took her. I understand if you don't want to share details, but did you find it incredibly detailed? what was it like? I just have a hard time wrapping my brain around this knowing how tarot works and how much space alone she'd need to read those cards, let alone time.