Have you thought about using paraplegic hand controls in the truck?
Then just raise the seat because she will not have to reach the pedals.
You would also have to swap to an auto tranny though.

Don

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!