Thanks Will for the vote of confidence.
Beyond the immediate wish to find new homes for her equipment after our daughter's death, I have posted these details here in the hopes that someone will pick up the challenge of wheelchair programming. Although there are many participants at the WheelchairDriver.com forum with various skills: deep understanding of the dynamics of wheelchair behavior, mechanical, electrical and electronic design and construction etc., at the moment I am the only one there who is keeping up with software (even though I am a self-taught amateur who's working career was as a geneticist and U. professor). I am unlikely to be able to continue this long term - my 80th birthday is only 5 days away.
If you are at all curious about this, by all means spend some time at https://www.wheelchairdriver.com/board/ and its parent page to see what has been done and what still needs doing.
Lenny