Oh no the poor wee thing!! How awful for you both! Do take her to the local clinic or hospital if it gets much worse & she isn't eating or drinking - especially if she is not drinking, as children can dehydrate very quickly.
My prayer for you:
Our wonderful Father in heaven, please look upon Levi's wee daughter,& help with her cough, & help it to resolve so that she comes back to perfect health. Amen.
Let us know how she is won't you!!