Hmmm. The article indicates a broken window, and further ‘medical and forensic evidence’. If the broken window was the point of access, it might indicate that a lot of the cuts sustained by the alleged intruder could be traced to the broken glass. That fact would change the entire scenario. It then becomes ‘much ado about nothing’.
If that’s the basis of the law, if a child enters your home without permission and you feel threatened you are allowed to take any force necessary to no longer feel threatened. Using that definition you could stab an 8 year old to death and be in your legal rights.