Reminder: according to the Spoiler policy, there should be no spoiler tags on moments pages. Those reading without being up to date on the game's plot are doing so at their own risk.
Any time the Player Character is unable to feed the child. The kitchen is empty, the store is closed, it wouldn't matter if it was open because you don't even have enough money for gruel, the forest and lake are both too foggy to access, and your child's food gauge is already low. All you can do is attend to the other two gauges, send your child to bed, and wait for the next day of work.
Working overtime at the factory. It nets you an extra 30 coins, which can make a real difference for the Player Character, but the cost is that when you get home the child will be sad and probably filthy and all you can do is send them to bed.
Seeing your child get bullied at school. You generally have no way to make it stop, as the adults at the school (with one exception in Mr. Berg) join in.
In the last chapter of the game, the child has to stay after school for detention because they missed a few days at school. This previously bubbly child becomes quiet, withdrawn, and uncommunicative. The child stops letting you tickle them, stops bathing, stops asking for bedtime stories, stops playing with the ball, and finally stops eating. Then the child draws pictures and you get confirmation of what's wrong: the child is being molested by Mr. Solheim.
The child starts eating and playing with the ball again, though only because they know that watching them waste away is breaking the Player Character's heart, but the child will never let you tickle or bathe them again.
The events related to the child's bio-family are all this.
The child's birth-mother is remarried and initially refuses to help you find information, even calling the child "a mistake".
The child's maternal aunt and grandparents at first agree to meet them, but when the meeting takes place the child's grandparents are insulting and hostile and the whole thing leaves the child feeling worse off.
The child's paternal grandparents, including a grandmother who genuinely loved the child and was willing to raise them, turn out to have died during the war.
The child's birth-father married a woman in Germany, started a new family with new kids, and wants to pretend the child never existed.
While searching for information about the child's birth-family, one of the people you ask for help is the local vicar. He not only refuses to help, but even says your child should consider themself lucky to be allowed to live. For players who are Christian in real life, this can be a real gut-punch.
It's not even possible to Earn Your Happy Ending, as the closing narration won't say whether or not the child's new home will be anymore hospitable than the one they and the Player Character left. The only two things that are known are that Player Character and child only moved to a different region of Norway, and that they'll still have each other.
