Hmm. Tried my "brilliant" solution and it failed.
I'm seeing what's happening here. The arrow over the letter is like an accent. It's as if I'm turning "e" into "é". I get where the difficulty comes in.
I was going to suggest using kerning. But the arrow and the previous letter form a single unit. So that's not possible.
Turn the letter with the arrow into a path then move the arrow into the correct location.
Create a separate text block and use the Unicode by itself, creating the arrow only. Move the arrow to the desired location.
To create the arrow successfully, use the
Click the page.
Type a single letter and then several blank spaces using the space bar.
Ctrl+Shift+T to open the Text and Font box.
Place the cursor at the end of the row of blank spaces.
Add your unicode arrow.
Click apply then close.
Click the edited text on your desktop.
Press F8 to edit.
Delete any remaining blank spaces.
Move arrow over letter.
This works fine in the case of 1 or 2 letters that need the arrow. If this arrow must appear over every "E" in a hundred paragraphs... I'm not sure what to offer as a suggestion.