Sparkling Child Theme - Download, support, function examples

Hello Aigars, Amit and all. :slight_smile:
First of all thank you for a wonderful theme. I liked it so much I told a friend she should this one out of a selection of themes she had for a blog she wants. She wants a couple of modifications and (after reading about child themes) I suggested I could help her.
But. I am afraid you all are much more advanced in coding than me. I cannot even make two very little, simple things to work.
#1. She asked me to change the footer info on her site, from saying “Powered by WordPress” (leading to WordPress) to “Powered by My Fabulous Site” (leading to her personal site).
Following the instructions here, I downloaded the Sparkling Child Theme, activated it, added a functions.php file, modified it and ended up with the following code in the child-theme/functions.php

<?php
// Add your custom functions here
/**
 * Custom functions that act independently of the theme templates.
 */

/**
 * function to show the footer info, copyright information
 */
function sparkling_footer_info() {
global $sparkling_footer_info;
  printf( __( 'Theme by %1$s Designed by %2$s', 'sparkling' ) , '<a href="https://colorlib.com/" target="_blank">Colorlib</a>', '<a href="http://her-site.com/" target="_blank">Her Wonderfull Site</a>');
}

?>

Unfortunately it did not work. The site was totally gone giving Fatal Error. :o

#2. She also wants to use the “Comic Sans MS family fonts” By default. I could not find them under the theme options and tried to add them. I tried what was suggested here, using get_stylesheet_directory. Another disaster. :frowning:

Could you please, please, please tell exactly what to write and where to solve these two issues?

Thank you for your time,
raloudaki