Change language of child theme

I think I must be missing something about how to change the language settings in a child theme. I have:

1. Made a new *.po and *.mo (using PoEdit);
made a /languages/ folder in the child theme;
put the files here.

2. Copied the functions.php from the parent theme folder to the child folder;
deleted everything except the alx_load function;
changed get_template_directory to get_stylesheet_directory.

So my functions.php looks like this:

<?php
if ( ! function_exists( 'alx_load' ) ) {
	function alx_load() {
		// Load theme languages
		load_theme_textdomain( 'hueman', get_stylesheet_directory().'/languages' );
		// Load theme options and meta boxes
		load_template( get_template_directory() . '/functions/theme-options.php' );
		load_template( get_template_directory() . '/functions/meta-boxes.php' );
		// Load custom widgets
		load_template( get_template_directory() . '/functions/widgets/alx-tabs.php' );
		load_template( get_template_directory() . '/functions/widgets/alx-video.php' );
		load_template( get_template_directory() . '/functions/widgets/alx-posts.php' );
		// Load custom shortcodes
		load_template( get_template_directory() . '/functions/shortcodes.php' );
		// Load dynamic styles
		load_template( get_template_directory() . '/functions/dynamic-styles.php' );
		// Load TGM plugin activation
		load_template( get_template_directory() . '/functions/class-tgm-plugin-activation.php' );
	}
}
add_action( 'after_setup_theme', 'alx_load' );

Since it didn’t work, could someone tell me what I am missing? Thanks so much.