Hi Sanjay Saxena,
I understand your concern for your mother.
It is common for a patient (who was just discharged from hospital) to not feel all better. Give her some rest, continue the medications given, they are all good and effective for her diarrhea
Please monitor her BP at home if you have digital BP recorder. If there is a wide range of difference in the readings, call her doctor. Give her plenty of fluids to drink with tender coconut water.
Be patient and help her to recover soon.
Wishing your mom a speedy recovery.