Posts Not Visible–But Are Published

I just gave permission to a new Editor on my WordPress blog/site. Her username is Heather.

She has added to new posts, but they are not showing up on my blog.

Here is the blog: https://greatcollegeadvice.com/blog

Her new posts (as of yesterday and today) are:

https://greatcollegeadvice.com/choosing-the-right-college-location-how-independent-are-you/ and
https://greatcollegeadvice.com/students-with-learning-differences-getting-started-with-the-college-search/

I am using Firefox. I have gone back in as myself (Mark, the Administrator) and added a post, and it came up just fine as it should.

After searching the Forum a bit, I thought that the trouble might be that the text was copied from MS Word (for Mac) and not inserted correctly. But when I go into the HTML editor, I don’t find any weird code that I can delete to fix the problem.

I also tried scrapping the posts entirely and redoing them…no dice.

The posts seem to be published, because they link to my Facebook page. So I see them there, but not on the actual blog/webpage itself.

Am I nuts? I hope some kind soul will take pity on me and lead me to a solution.

THANKS!