I checked your site and then tested on a test site.
Here's what you'll want to do:
*You'll need to delete your custom menu, I'm afraid. Don't worry - we'll re-create it, and it will be easy!
*Create the pages you want to see on your menu (I have written down "About Me, Classes, Meditation, Thai Yoga Massage, Welcome, Workshops" as your desired pages).
*Once those pages are created (you don't have to populate them yet - but you can), go back to Appearance > Menus
*Name the menu and click "Create Menu"
*On the left column, you should see "Pages" - click on "view all" and select all the ones you'd like included in your menu
*Click "Add to menu"
*You'll see these items appear in list form on your Custom Menu - you can arrange the order by dragging them around.
*When you like the order, click "Save Menu"
That should be it! If you have any further questions, please don't hesitate to ask!