Thank you for waiting our response,really appreciate it.
Basically page speed load not only caused by theme. I see in your site use plugin that make your image resize (not use natural size). For example this image http://i0.wp.com/www.thebobbypen.com/wp-content/uploads/2015/08/good_girl_million_tink_thebobbypen.png?resize=360%2C193.
Please try to deactive that plugins and check again.
Hope that helps,