Hi there ~
I am sorry that your mother is having to deal with a lot of anxiety and stress causing her to have stomach pain and dizziness
. I do however feel like if she is on SSRIs they can contribute to the hyponatremia
. I also think that depression
can be treated more effectively with the use of a combination of therapy and medication. I hope you consult a qualified psychiatrist
today. Though its been a while since your mother won a battle against cancer and is on meds for hypertension
and ADD I believe that she can easily beat depression and anxeity with the right help.
I hope this helps.
Take care and have a lovely day !