Hello, As your daughter is already diagnosed with Strep throat, so the white spots present at the back of throat seems to be pus pockets that are commonly seen in strep throat. If she is symptom free, you need not to worry as the white spots will also disappear gradually. She should continue doing warm saline gargles and antiseptic mouthwash gargles. Also avoid spicy and irritant foods. In case if the white spots does not resolve in another one week, you should consult a Physician and get her checked as white spots can also be tonsil stones. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Honey Arora