The WP or MT 27" Top-Load-Stack
Is by far the best choice, these are still the Direct-Drive machines and are extremely durable and able to be repaired in place without moving it from the installed position.
I have never seen an adult that is too short to operate the controls on this machine, I would suggest going and looking at one in person. The controls are far better at the top, Frigidaire has lots of problems with fires and other problems with the controls below the dryer.
The GE 27" stack is not a FD design and the washer part is an absolute piece of junk about half of these washers we look at we condemn, the washers main seal goes out in as little as a year or so and ruins the main bearings and these are impossible to repair. I condemned one last Monday that was just two and a half years old, only good thing is that GE knows what a POS these are and immediately offered our customer a new machine for half price, they did not even try to dispute our repair estimate of about $1000.00 they know that these machines are virtually unrepairable, LOL.
If you can't reach the controls on the WP-MT and have to have a TL washer get the Frigidaire 27" stack, at least with the FD you have a decent chance of it lasting 10-15 years.
I will say by far the best full size stack is the SQ FL stack, unless you can not afford it you can't find a better machine period. And consider at our ages putting the SQ in your will as it could be going strong in 50 years.