Hi there. The platelet level is really low and your mom is elderly - I strongly recommend that you immediately take her to the nearest hospital for treatment. You need to understand that there is no cure for dengue infection - treatment given at the hospital is supportive through rehydration and platelet and other blood parameter levels are closely monitored. Should platelet levels dip too low -platelets may be transfused to prevent internal bleeding. It is very necessary that you take your Mother to hospital ASAP.