Customizing RSS Feed – Comments not showing

I’m feeding my WP blog into my big cartel shopping site with RSS. Problem is the share buttons and comment link/comments do not show up on the feed.

I looked at this: http://codex.wordpress.org/Customizing_Feeds
But my coding skills are very minimal, so I’m not entirely comprehending what I need to do.

Original blog: shannonsouth.com/blog
RSS fe blog into site: http://shop.shannonsouth.com/blog

Can someone please explain? Help!