Yes! I watched her get into the van and drive off. Other than just seeming a bit out of it she seemed at least somewhat lucid during our short interaction.
It's good news that she's still able to walk and drive.
Did she do some kind of muscular reinforcement lately ?
But seriously, regarding the meds, the only ones directly targeting things like Alzheimer's only produce, sometime, a small decrease regarding the speed of the degenerescence.
The other psy meds that are usually prescribed are for actual symptoms that occured depending of the regions of the brains which are damaged. Like frontal lobe damage tends to make people impulsive, aggressive, then they can be given sedatives, typically neuroleptics. Depression, anxiety, and sleep troubles happen often too, and that can involve meds like antidepressants, anxiolytics and the such.
The risks are mainly due to the sedative nature of the meds. At this age, il you fall, break your leg, and stay in bed without moving for 3 months, your muscles will have melted so much that most never walk again.
Also, if things like benzos are involved, the risks are the increased deficit of attention and memory, and driving with it seems quite dangerous.
But that's just speculation.