@suemom2kay - Don't forget Toy Story Mania (used to be Toy Story Midway Mania) - it whips around corners pretty fast, but maybe that's still OK for her? Also, Alien Swirling Saucers (also in TSL @ HS) can also sling you around in the car a bit as well - just a reminder
FOTL is not always the norm these days, even with a wheelchair and/or
DAS - if it's super busy and crowded, be prepared to wait

Oh - and I almost forgot - remember, because she will be sitting in the chair, concentrate on getting sunscreen on the tops of her ears, shoulders, arms, backs of hands, and the tops of her thighs and feet.
I hope y'all have a great trip - maybe you can focus more on some of the non-Parks stuff, like Hoop-Dee-Doo out at FW, or a girl's only shopping day at Disney Springs, or just floating the lazy river at one of the water parks! Maybe make some new mother-daughter traditions!

(BIG fan of those - my adult daughter and I make "girls only" trips a few times a year!)