I think the theme is political and the form is of british customs
Internal conflict is the point at which a character has to decide to admit to themselves what the issue going on in their head is and to take some sort of action on it. For some characters such as Dante (Dante's Inferno), this is dealing with depression and seeing the things that await him in Hell if he commits suicide. For others, it's working an issue that is a part of their past, such as PTSD flashbacks from war.
I'm not entirely sure how to say where in a story this conflict takes place, as it varies from piece to piece. Hopefully, however, this provides some better understanding of the concept.
The answer to your question is form
Throughout the horrors of his captivity, Wiesel states that he needed to be strong for his father. He needed to survive for his father. After his father's death, he no longer feels as though he has anything to live for. It can be assumed that he no longer paid attention to the world around him. His lack of detail about that is due to the fact that he no longer cared about what was going on.
Carelessly/ careless / carelessness
