In any case, it looks like after age 3, you can actually give kids cough drops or cough syrup. I'm taking recommendations, because I don't know if she (or we) can take another night like last night. What's effective? What will they actually take?
Please keep in mind that Kavi developed a strong aversion to medicine a few months ago, and generally refuses to drink any. And when her throat is sore, she really doesn't want to drink anything at all. I got her cough to calm down at three a.m. last night by letting her suck on a lollipop, but that doesn't really seem like good parenting. (You're sick? Have some candy!)
Oh, and bizarrely, she hates honey. Also dislikes ginger. So those two home remedies are out.