[...she opted for the answer that didn't involve the latter, far more upsetting aspects of their life. The answer that reminded her of their younger years. When Dahlia's soul was still innocent. Relatively.]

I suppose it's similar to what you described with Patamon.

Even when we were separated, as children, Dahlia and I were still there for one another. She was my only friend in the outside world, and I would have done anything she asked.