Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.Weight loss
of 10 lbs is significant weight loss and needs to be investigated. Although there are plenty of causes for weight loss but at the age of 84 one has to be cautious for cancers as well. Get her examined by a physician for weight loss who can examine her physically.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, or want to further details about your query, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.