Sore throat in baby

Elysha

My daughter got sick from my sister's son. She has so much snot and mucus and doesn't know how to get it out cuz shes only 9 months old. I know her throat has to hurt cuz the coughs are hard and she can go for up to a min. What can I do to soothe her throat? I already have a cool mist humidifier and I've watered down apple juice for her