[vorpalhex]

Doing meth to the point that it kills your baby is in fact murder.

[anigbrowl]

Not unless you can prove intent, which is probably why the case was dismissed - https://www.ktvu.com/news/murder-case-of-meth-user-who-deliv...

In any case, such nuance is likely beyond the grasp of a 17 year old. I think you are well aware that this doesn't always yield simple seeming edge cases and that you are capable of looking into other examples but chose not to. Here's some more.

https://www.bbc.com/news/world-61995250