I can click the Daily Post link in your custom menu and arrive in the correct blog. I can see these tabs in your custom menu:
My daily thoughts
Quotes
Books
Language
Music
Travel
Weekly Photo Challenge
Daily Post
Please go to the custom menu page in the dashboard Apearance > Menus and make sure you have added the categories to it.
http://en.support.wordpress.com/menus/
1.You add the Categories you want to display and arrange them in the order you want.
http://en.support.wordpress.com/menus/#adding-category-pages-to-your-menu Then you add and drop and drag the sub-categories below the appropriate Categories. http://en.support.wordpress.com/menus/#changing-the-order-of-menu-items-and-creating-sub-menus
2. You add the Pages you want to display and arrange them in the order you want.
http://en.support.wordpress.com/menus/#adding-pages-to-your-menu Then you add and drop and drag the sub-pages (child pages) below the appropriate parent Pages.
3. You add the custom links like the Daily Post link that you want to display and arrange them in the order you want. http://en.support.wordpress.com/menus/#adding-custom-links
4. When you have everything arranged in the menu that you want you save the menu.
5. Go to the “theme location” module at upper left on the menu page. Select your custom menu name from the pull-down labeled “primary location.” Click the save button in that module.
6. Refresh your browser so that it isn’t possibly pulling a cached page, and view your new custom menu with Parent pages and dropdowns to sub-pages, and Categories with dropdowns to subcategories, and Custom Links.