What's the 'harm' in letting her leave early? = I don't see any 'harm' in letting her leave early. = There's no 'harm' in letting her leave early. [=letting her leave early will not hurt anyone or cause a bad result]
I want to be sure that no 'harm' will come to her. = I want to be sure that she won't come to any 'harm'. [=that she won't be hurt in any way]
He claims that he didn't mean any 'harm'. [=that he didn't mean to hurt or bother anyone]
(..) Pull us out, Sven. Olaf! Come on. I'm coming! Let's go kiss Hans! Who is this Hans?! We are here to find Princess Anna. Be on guard, but no harm is to come to the Queen. Do you understand? Yes, Sir. The Queen. Up there! Come on! No, Please. Stay away! (..)2013 Frozen