The probable reason your wife has low Haemoglobin
is because she has heavy bleeding during her periods. She needs to take Iron supplements
also. For her bleeding, she may approach a Gynaecologist who will do a workup to rule out certain disorders like Genital tuberculosis
which can cause high ESR. She may take Tablet Paracetamol
650mg 3 times a day after meals for her fever. She may take Pause MF tablet once a day during her periods to reduce the heavy bleeding till she approaches her Gynaecologist.