death should just be a fictional thing to them and only when they turn 18 (if they really must
) should they start talking about suicide and dying.
I have an issue with this, death can't be only a fictional thing if one has their reasons which lead them to do anything associated with dying. Just because someone is a minor, doesn't mean they don't have their own reasons justifying as to why they wish to be freed from their misery, therefore they shouldn't be invalidated for their struggles. You come off as someone who'd do such a thing, invalidate someone for incontrollable factors of their life.
For example, my cousin is 13 years old. She has many, many serious attempts to ctb, all of which failed miserably. She has a very bad family life; she isn't cared about;, a bad mental health since such mental health issues run in the family, and more reasons which I don't know about, that push her to ctb. Therefore, having thoughts of suicide isn't only limited to adults, I'm sure many of us here on SS including me have had the desire to die since an early age, 8 for me.