Titles Missing from Widgets when Accessed through Facebook

When I access my blog through Facebook, the titles (ie recent posts, subscribe, etc.) are missing from the widgets on my sidebar, but the rest of the widget information is still there. When accessed NOT through Facebook, everything is fine. This is the first time I have shared my blog on Facebook, since I just created it recently. I am new at this and don’t have much knowledge of HTML, so any help would be appreciated. You can see it at https://www.facebook.com/sherylgrey. The blog is at http://www.penontheedge.com. Thanks!