Thanks for coming to my rescue.
I delayed replying until after reattempting the import process.
As it turns out, I was right to wait. It still isn't working. The "Posts" indicator is still stuck at "38 of 18" and will not reset to "0 of 18".
I tried the XML export from Blogger/import to WordPress method also, several times. So far, no dice.
A message in WordPress reads "Your file has been successfully uploaded. We will begin processing your import right away."
But so far no posts have appeared in WordPress.
If there is something else I can do on my own, that does not require pestering you or your colleagues, I will be glad to do it.
I just don't know enough about PCs and software to do it, unless "Instructions for Dummies" are available. I'm merely an ordinary end user. Not an IT pro.