I actually see no problem in Daenerys name. In fact I love all the Targaryen names, they sound very royal. Daenerys also is canonically called Dany. I think as long as it sounds good with the surname, it would be okay (I think it's the special problem for Slavic counties, to make name+surname sound good together). So what if you call your child the name of "crazy woman who perished a city", people still call their children Adolf and Joseph, don't they?
You guys are saying the name of Elrond or Gandalf is not appropriate, then how about Eldar? Is it inappropriate too? Meanwhile it's a legit Scandinavian and Turcic name.
Names are the words that just mean something, most of them just mean something in Greek and in Hebrew, doesn't mean we cannot make new ones
They may sound stupid in your language or country, but just as well those Greek names probably sounded stupid a few hundred years ago.
I definitely do agree though that it's very strange to call you child Hikaru or Li Qing if you are Europeans living in Europe and even worse - to pronounce it wrong.
I have no particular feeling to the name of Renesmee other that is sounds like someone pucked, but you know, it's subjective 