Presence of whitish yellow spots over back of throat indicate that your daughter might be having Pharyngitis
Under such condition, anti allergic medications such as Zyrtec
& Patonol won't help much.
1. Gargle with warm salt water to relieve throat pain.
2. Analgesics like paracetamol
3. Antibiotics to be started depending upon the result of culture sensitivity report of throat swab.
4. Antihistamine preparations can also be used to provide symptomatic relief.
So...it will be better to consult a Pediatrician
for further management.
Meanwhile...make sure your daughter avoids taking cold
food & drinks, maintains adequate hydration & takes soft, non-spicy foods.
Wishing her a good health & speedy recovery.
Thanks & take care.