Scrubbing Safari clean

Wife has been having some issues with Safari and her facebook account lately--her HOME pages has not been allowing her to view more than a dozen posts before it stops loading more. There is no problem on her page, just the home. Just tried logging on to her facebook via Chrome and all seems to be normal. What should I toss out to scrub Safari in case there is something lurking in the background?

The browser cache is probably full. Just have empty the browser cache which you can do from Safari Preferences, General, history. Or, you can do a reset of Safari but be careful of that.... go thru the settings first to see which ones you wish to keep.

I discovered she had installed an extension that was supposed to make FB better. When I looked into it, I noticed a number of people reviewed that their FB was not acting normal. I removed the extension and all is fine.

Nice bit of troubleshooting.