Is your mom on pd meds? Many of those cause confusion. I had terrible problems with pd meds affecting my mind negatively so I quit in 2009 and my cognition returned to normal. Now I prefer to treat my pd, which is advanced, with ldn (low dose naltrexone), dopavite, b12 injections, L 5 methylfolate and I'm looking into high dose b1 (thiamine). I prefer to put up with more physical symptoms than lose my mind. A dopamine agonist, mirapexin, put me into psychosis! I'm 54. Daily yoga and meditation also play a huge role in my well being.

Given that your mom is not early onset, she could get a long way on dopavite supplement which has no side effects but takes weeks/months to kick in.