If I were in the daughter's shoes I could never trust anybody ever again, not even my future partner.
Besides that, just think what if the daughter starts doing the same things when she grows up.
It's like teaching your children the wrong things because they learn only from their elders.
Children's trauma can be that deep, and it creates or affects many things in their lives, both psychologically, mentally, emotionally, self-confidence, trust issues, and so on. That's why, as best as possible, as parents, we must guard all of our children's memories wisely. It's just that, for this case, hmm, it's really sad.
There are many cases of addiction that end badly, either becoming a criminal, ruining the family's reputation, destroying the future of children, to cases of suicide which actually worsen the situation. The thing is, I also have an acquaintance, from my brother-in-law, he even lost all his wealth and also his parents' wealth, now, his parents who used to be famously rich, can only rely on other relatives, he finally entered a mental hospital, and finally divorced his wife, what's even sadder, his child is not even 1 year old.