Hi Brian. Sure enough, this doesn’t seem to be working with your setup. Sorry to lead you down the wrong path there.
What I would do instead is just override the header.php file in your child theme and hard code the header/homepage link. Are you comfortable editing PHP files?
To do this, copy the header.php file from the parent theme to your child theme. Then, remove the line that calls the FLTheme::header_layout() method on line 48. Then, in your parent theme, find the includes/nav-right.php file and copy/paste all of that code into line 48. Make sure you close and open the PHP tags too.
If this is too much for you, I would be happy to set this up for you. I would just need FTP access to your site. Let me know.