Thanks for placing your query here.
I can appreciate your concerns.
The girl most probaby has viral sore throat
or thrush (candida fungal infection
is rare below 4 years of age.
Have you used any thrush medicine ?
Has she got any cough/cold or red eyes?
Continue giving tylenol
every 6 hrs & make sure she takes enough liquids.
If there is no improvement in 48 hrs or so please see a doctor.
Hope I have answered your query.
If you have any further questions I will be happy to help.
Wish her a good health.