The way a demon goddess shapes conflicts depends entirely on how she's framed. If she's a distant, primordial entity, her influence tends to be cosmic—cults spring up, prophecies are made, and her mere existence warps the magical ecosystem. That creates a backdrop where characters scramble for scraps of her power, often turning on each other. The struggle becomes less about who's the strongest warrior and more about who can correctly interpret her will or steal a fragment of her essence.
On the flip side, a demon goddess who walks among mortals and directly picks favorites changes the game entirely. Suddenly, the power struggle gets intensely personal. It's not just about armies clashing; it's about navigating her volatile favor, managing her jealousy over other sources of power, and surviving her tests. I've seen novels where the 'chosen' champion is just a pawn she's grooming for a later sacrifice. That kind of manipulation from within the ranks makes for a much more paranoid, intimate kind of conflict where trust is the first casualty.