I agree that the singling out of the mother for condemnation in this comment section is conspicuous and dismaying — thank you for pointing it out. Nevertheless, I would offer the father the same grace that I think the mother deserves, and I think you will be sympathetic.

We know little of the mother's circumstances, and we know basically none of the father's. He may not even be alive. He could be an "absentee", or even an abuser himself — we have no information. But he might also be active in Lucy's life yet tragically unaware of his daughter's plight.