Hi Allie,
Poor little one....
An idea, if she will cop it is if you have a wheat/heat pack you could warm it a little and if she has a pillow stick it in her pillow case to warm her pillow.... I used to get the worst ear aches in the world when I was little... from about 5yo on and if mum didnt have a heat pack she would heat salt in a saucepan and put it in a folded tea towel and stick that in my pillow

The heat just helps take the pain away and loosen the congestion but dont know if a little one would like it.
Hopefully she wakes up tomorrow morning and its gone.
Good luck
xoxo