Unexplained fever needs complete evaluation with
blood tests like CBC which includesHemoglobin,neutrophils,
platelets,hematocrit,ESR,Widal,Malaria,Dengue serology.Since you come from a community prone for such diseases in this season,take the person to a Doctor who can check her completely to see all possible infections.
Avoid taking more Paracetamol since it not only causes side effects but also have little value if it is a infection.It controls only fever or mild pain.