Ah, okay. That's probably where I got confused/misread something.
Okay, great. She'd only be connecting it to a single external ~22" display.
That's good. We have a plan now. I'll let her know today when I see her.
Those refurb M1 Airs with 16GB RAM and 256GB SSD can be had at a great price, when they're available. I've seen them often over the summer.