Princess Maker/Tear Jerker

Thanks to Video Game Caring Potential, the 18th year. You get attached to your daughter, and then you're sad, either because you're wistful that you'll have to leave her behind, or you're happy for how she's turned out, or sad for her...
On the other hand, if the player allows the daughter to succumb to illness and die, they will get chewed out by her patron deity, and if the player has any kind of soul, they'll feel as though they'll deserved it.