Minimus--is your mum in her own home-?--or a care home--or your home. do you have any control over who is allowed to visit ? it might be better to restrict or limit such visits if she is very weak or distressed.
my old dad --94--is in a care home nearby. he is much weaker now than 6 months ago. he never gets any jw visitors any more---not since an elderly sister who knew him passed away many months ago. the local elders know he is there--but stopped visiting over a year ago. i simply dont know why.
maybe dad told them not to come anymore. or maybe they shun him because he has a close relationship with me. my own daughter has never visited him--but only lives half a mile away.