Blogger vs WordPress Blog

My daughter asked WordPress to send me an invitation to be able to edit her blog, called Hautecancer. I wanted to try reversing the order of her posts, especially to make sure the one she wants to appear at the top (which is now at the bottom) gets repositioned. But I am confused: first, I seem not able to do any editing. The way this is set up for me (as 'editorchico') I think you expect me to start my own blog.

The blog I need help with is hautecancer.com.