I want to do a complete uninstall of Verbum without leaving any files behind.
After uninstalling the program, Verbum left a lot of files and folders behind in C:\Users\hh\AppData\Local\Verbum.
Are there other files that I should delete?
Yes; user documents are retained to make the uninstall-and-reinstall process work better. (It seldom fixes anything, but Windows users are used to trying it, so...)
There may be log files in %LOCALAPPDATA%\Faithlife\Logs, but that should be it.