Trying to edit footer but content not in footer.php file!!

Hi all- I am using a theme called Highlight, which as it turns out no longer offers support by the developer, so I’m on my own here! One thing I am having an issue with is customizing the footer, because all that’s in the footer.php file is this:

</div><!– #container –>

<?php /* Theme specific javascript – DO NOT TOUCH */ ?>
<script src=”<?php echo get_template_directory_uri(); ?>/js/plugins.js” type=”text/javascript”></script>
<script src=”<?php echo get_template_directory_uri(); ?>/js/script.js”></script>

<?php wp_footer(); ?>

</body>
</html>

I’ve looked through many of the other files and cannot find where to edit the footer! Is it possible that the developer somehow made this un-editable?

Your help is appreciated!!

Renessa