Keyboard connector adapter needed for older MS Surface

I have a friend with severe hand problems (as in when she types she doesn't bend her knuckles or else severe pain).

Long story short: She has lived on 3rd-7th generation Microsoft Surface devices because the one true painless keyboard for her is the one on the Surface 3 Pro Type Cover. She has used this keyboard and not anything made more recently. All was fine until...The release of the Surface 8 line. As of the Surface 8, the connector design has changed. With that, she has not been able to upgrade her machine since.

My mission (or yours if you choose to accept it) is to find/construct an adapter such that an older Surface Keyboard can be connected to a recent model Microsoft Surface.

Difficulty? Expense? Pointers?

ADVThanksANCE