Deleted page still showing in Sidebar

I recently discovered that I had screwed up in the placement of one of my “Link” pages at https://www.TellMeAboutThat.com. I had failed to place “Shopping” under the parent “About Me”. I made the change and then went to my site and clicked on “Shopping”. What came up was my “About Me” page instead of the “Shopping” links. After several tries I got frustrated and deleted the “Shopping” links page. Instead of 13 pages my WP-Admin section now shows 12. However, when I go to https://www.TellMeAboutThat.com, “Shopping” is still under the links. However, now it says “Page not found”.

What am I doing wrong?