Hi sir/ madam, Welcome to health care magic, I can certainly understand your concern towards your mother s condition, which is known as gastroenteritis, firstly , there is every requirement to replenish her with plenty of fluids make her drink extra fluids with and between meals., along with oral rehydration fluids Avoid fruit juices, as these do not replace minerals and can actually increase diarrhea. make her eat food in small amounts and let her stomach recover. Then, we should find out the cause by investigations such as stool sample test, to know whether it is bacterial or viral infection and needs to be treated accordingly please do the test , if they have not found the cause yet hope this information would help you Post your further questions if any Thank you