Her punishment is to get her period with no idea what it is, find out that everyone was manipulating her all along, publicly fail as a mom-figure, be personally responsible for her beautiful home being destroyed, possibly cause another kid's death, and have to leave (possibly to die!) anyway.

I can't even sarcastically type that that seems perfectly proportionate to me.

As a counter-recommendation: it hasn't got children, but over the summer I watched Inferno (1953), which as a survival story which also happens to be a film noir I enjoyed very much.