How do I find which theme is activated?

It looks like your 2011 child-theme is active.
You can tell for sure by going to Appearance > Themes in the admin panel. The first theme in the top left is your active theme. You can actually remove the 2010 theme, its not needed, but if you feel more comfortable with it there you can re-download it so it’s not broken.

Can you possibly post that footer.php contents to pastebin.com and link it here?

The active theme is currently 2011 child-theme, so this is good. How do I make sure the parent theme is 2011 and not 2010? The 2011 parent theme is sitting deactivated in Appearance > Themes admin panel. Do I have to re-activate 2011, then re-active the 2011 child-theme?

This is my current style sheet info:
/*
Theme Name: Twentyeleven Child Theme
Description: Child theme for the twentyeleven theme
Author: Karen Hamilton
Template: twentyeleven
*/

@import url(“../twentyeleven/style.css”);

This part of your child themes css file calls the parent theme, your’s is set to twentyeleven so that’s the theme it will use.

Resolved … I copied over the 2011 parent footer php file to the child theme footer file, over-righting the 2013 child footer file. This worked as my footer has re-appeared and looks perfect! https://www.khartist.com

Thanks so much for your support. You guys rock!