Social media copywriting

My client is a resort in a popular island in Langkawi and am managing their social media (Fab and IG) accounts. So what she would charge for 1) editing a whole months copy ie 4 posts a week so 16 posts a month and 2) how much for you to write the entire posts for us ie 4 posts a week, 16 posts a month? Editing vs Curating content