For Louella -- whatever you saw, and the mother may have said in evidence, the prosecution had soc media evidence saying "look at the lovely present" -- and there was the gun in question.
Parents were also well aware of the boy's 'issues', hence the prosecution (with dad's scheduled soon). As several have said, good for them, maybe it will deter a few other barmpots over there.
Somebody raised their oddball 2nd Amendment (made sense in the 1700s and 1800s), and "should be changed"? Well, quite so, but it's in their DNA now, with swift squawks about "our rights" if someone suggests change. 15 years ago the Supreme Court said that criminals and the mentally ill had no such 2nd amendment rights, but they cannot even sort out the legislation for that.
In 2017 the Las Vegas massacre saw 60 or deaths, hundreds wounded, via a maniac shooting into a crowd. Chump, when asked, said they were "looking at" arms control laws. All he actually looked at was his postbox, to check when the next fat cheque appeared from the NRA.
The States over there all have slightly different gun laws (madness -- like a few counties here saying you can drive a car at 14?) -- and when told that say Japan has hardly any gun deaths, likely because it's almost impossible to get a legal gun, they say all our crims have a gun, I want one too.
There is also the definite feeling in the majority white population that almost all the problem with guns is due to Afro-Caribbeans and the drug or criminal 'culture'. This conveniently overlooks that most of the school and college mass slayings are by whites! As somebody on here said, the problem won't be getting better anytime soon!