For 2 years and 8 months. Not condoning his actions in any way, but having read what his mother had to say I find myself feeling for her and him. Not a popular position I daresay.
If I'd been in her position I freely confess would have actively discouraged my son to hand himself in knowing that a) no-one had been hurt, dangerous as his action was b) he would be likely to be 'made an example of' (in the week that a man found guilty of severely beating a 2 year old walked free from court) and c) his life would indeed be 'ruined'. I hope I never find myself in that position once DS reaches 18...