www.independent.ie/irish-news/courts/he-wouldnt-settle-so-i-had-to-take-him-in-my-hands-while-driving-inquest-31595840.html
The article details the outcome of the inquest - death by misadventure. The father blames the airbag for killing the child but it is clear to me that it is the mother who is responsible for the death.
Maybe I'm wrong, I suppose it's possible there is a separate legal prosecution against her but it doesn't sound like it form the article.