Sounds to me like a false flag operation. The mother was killed in order to plant the guns at the home. The murder of children especially is just sick. And who ever created the facebook page should be investigated. They know something about this.
Here is a google cache Facebook "RIP Victoria Soto" page created on December 10th. The shooting took place on the 14th.
https://www.google.com/search?q=adam lanza school shooting&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&source=hp&channel=np fromthetrenchesworldreport.com/sandy-hook-shooting-false-flag-bad-actors-used-to-take-away-the-second-amendment/28915/
Take a look at the page before it is removed permanently. The page is already removed from Facebook.
The Facebook page shows the page was created on the 10th.