Hello Tori,
The problem is actually because these contents were copy / pasted from Microsoft word. Ideally, they should use the paste from Word from TINYMCE to ensure that TINYMCE strips off all proprietary codes like this,
http://take.ms/anVa9
Since the TINYMCE editor on the site isn't configured to be rendering the advanced layout, you don't see the paste from word button. The best way around this is to copy and paste the contents on a normal text pad and then paste it into TINYMCE again.
I have fixed these posts on your site and they should be truncated correctly now.