Breathing or Qi Prana the Key to Alzheimers?
I believe you may be onto something with the idea of your mother blocking her feelings or emotions but from what I have read about breathing techniques lately, we tend to stifle our breathing patterns when we hold our emotions back as well.
Could it be that in holding back our emotions, we hold back our breathing, especially in our stressful Western society which in turn holds back or limits our daily supply of Qi or Prana?
This could actually be the onset of the brain slowly but surely withering away.
In some of the books on breathing techniques that I have read recently, they talk about a tribe of people that easily live past 100 and look like they are 50-60. They have a practice of breathing properly, unlike "civilized" societies do.
Try looking into "rhythmic breathing" exercises and see what I mean. Modern society has long lost that art.