Update: I got it to work by changing the function fruitful_get_responsive_style in functions.php -- specifically:
function fruitful_get_responsive_style () {
$style_ = $back_style = $woo_style_ = '';
$theme_options = fruitful_ret_options("fruitful_theme_options");
wp_enqueue_style('fonts-style', get_template_directory_uri() . '/inc/css/fonts-style.css');
if (isset($theme_options['responsive']) && ($theme_options['responsive'] == 'on')) {
wp_enqueue_style('main-style', get_stylesheet_uri());
wp_enqueue_style( 'woo-style', get_stylesheet_directory_uri() . '/woocommerce/woo.css'); *
From get_template_directory_uri.
*(then it goes on to describe the fixed styles but I abridged it here for brevity's sake)
But this same code won't work when placed in my child theme's functions.php file. Anyone have any idea why?