So sad. Been there, so I can fully understand your dad's situation. Being a caretaker is a tough and stressful job. Far be it from me to condemn smoking, so just be sure your dad's around when she lights up. Grandmom may forget she's holding a ciggie. The mind sure is an intricate thing. And it's ever so sad to see our loved ones slip away from reality. I think the phone calls and support you're giving your dear dad is good medicine for him. You're a good daughter.