Lost In Translation
You have to give him credit for his persistence. It makes total sense that if she hasn’t responded it must be because she speaks another language. Lucky for her, he just happens to speak German to or he has Google translate. Either way, he has gotten his message across in both languages.
If she still doesn’t reply, do you think he will just keep trying different languages until he finally finds the one that she speaks? You will never find out until you try. I am sure one of them is bound to work. You should definitely get points for effort and originality.