Loop returns parent-page

For a client one-page website I am making I want to run a loop to get the latest three blog/news items to show on a page that uses child-pages as ‘sections’ of the page. I found a way to add a shortcode to output the loop on a sub-page, but it only returns the title of the parent page.

The structure of my one-page website:

– One Page (Parent)
— About us
— Menu
— News (this is where I would like the loop)
— Contact

I use the Rosa theme.

And here is the code I use in my functions.php:

function custom_query_shortcode($atts) {

   // EXAMPLE USAGE:
   // [loop the_query="showposts=100&post_type=page&post_parent=453"]

   // Defaults
   extract(shortcode_atts(array(
      "the_query" => ''
   ), $atts));

   // de-funkify query
   $the_query = preg_replace('~&#x0*([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $the_query);
   $the_query = preg_replace('~&#0*([0-9]+);~e', 'chr(\\1)', $the_query);

   // query is made
   query_posts($the_query);

   // Reset and setup variables
   $output = '';
   $temp_title = '';
   $temp_link = '';

   // the loop
   if (have_posts()) : while (have_posts()) : the_post();

      $temp_title = get_the_title($post->ID);
      $temp_link = get_permalink($post->ID);

      // output all findings - CUSTOMIZE TO YOUR LIKING
      $output .= "<li><a href='$temp_link'>$temp_title</a></li>";

   endwhile; else:

      $output .= "nothing found.";

   endif;

   wp_reset_query();
   return $output;

}
add_shortcode("loop", "custom_query_shortcode");

And I output it with: [loop query="posts_per_page=3"] in the page editor.