Can she disable the touchbar?
She actually bought one of those keyboard covers, cut off the touchbar part, and fixed it with tape.
She literally has a crappy piece of plastic on top of her keyboard that physically prevents here from accidentally touching the touchbar. A 10 dollar hack on a 2k$ machine.
I don't think she will buy an expensive Apple product, ever.
I use my old macbook air 90% of the time, and the yoga so 10% of the time. So at least she gets to use it every now and then.