Dany says Drogo told her she spoke Dothraki like a native buuuuuut Missandei tells her she has a long way to go with it.
Don’t you get it? Drogo lied to Dany about her abilities so she would be happy! He is such a pushover puppy with her he didn’t want to correct on her speaking. Instead he praised her cause he knew it would make her happy. Even in death Drogo makes me sqeee!