[drfunk]

Of course she's doubling down. Anything else would mean facing the extent of her responsibility in the death of her child, which would be absolutely crushing to her ego and self-image as a parent. She's protecting herself psychologically, that's not surprising.

[bell-cot]

It's simpler than that. Reversing her position would (1) burn her relationships with most of her social graph, and (2) paint a big target on her back...when nasty anti-vaxers are enjoying a strong tail wind from Washington.

In other news, very few victims of armed robbery say "over my dead body, thief!".

[wraaath]

I doubt that either of the parents have (1) or (2) in their mindset/decisioning tree. This is just Darwinism in full effect. Nature has a habit of shaking off the weak, and the weak minded.