Respected madam, hi I evaluated your query thoroughly. it is mostly related to decreased intake of liquids in relation to body requirement which may be increased in the condition of viral infection leading to concentrated urine and the symptoms which she is facing right now. give boiled water along with other liquids as lemon juice, coconut water,rice water, butter milk about 3-4 litres in total for 24 hours. maintain hygiene of the private parts with antiseptic soap in this period more precisely. else you are doing is perfect mam, thanks regards, hope your daughter soon recovers bye