Please make sure your mother continue to have some form of yogurt in her daily diet. She is prone to IBS, Irritable Bowel Syndrome. And I don;t think this will go away, instead will acerbate with age. Well, as long as I am alive, I will make sure of that.
In the event of my cessation of life, please make sure either one of you feed her her yogurt. Failing which, I will come back from the dead and hunt the both of you down.
That you can be assured!