hi thanx for sharing your concern,
has advised you absolutely correct regarding her treatment that is, you definitely require that tooth, in the longer run .
this deciduous tooth maintains the space for underlying permanent tooth which erupts after six years of age .
now you don't have to worry at all regarding raised temperature. it will automatically come down to normal , if it shoots above 100 degree Celsius then you can give half tab paracetamol
rest you can continue with the medication that your dentist has given .
look for a day if everything appears normal then no need to visit to the dentist but if you find constant rise in temperature or any other symptom then you must seek dentist help.
remember in small children defense mechanism is very good and acts very fast ,so need not worry till the time you find something drastic change.