My MacBook Pro freezes if nothing is moving on the screen
From your Console log, the last event before reboot was the 

Sep 26 03:35:00 Ashleys-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.bsd.dirhelper[379]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.bsd.dirhelper


What is Dirhelper

http://www.manpagez.com/man/8/dirhelper/osx-10.6.5.php

Possible solution..

Copy Dirhelper Plist as safety precaution  located in 

/System/Library/LaunchDaemons/com.apple.bsd.dirhelper.plist


Then delete it.

Restart

You can also try Safe mode to isolate the issue..

What safe mode does...

Verifies your startup disk and attempts to repair directory issues, if needed
Loads only required kernel extensions
Prevents startup items and login items from opening automatically
Disables user-installed fonts 
Deletes font caches, kernel cache, and other system cache files