@TreyNutz The graveyard where she was is the one with the death fish spawner. The smaller graveyard doesn't have one. I checked with MC to make sure, even though I could tell it was by how it was functioning when the death fish wasn't present. When she got there, inspecting the water said it was a decent place to fish, and the only fish listed were the vampire fish and red herring. That's what the death fish spawner always says during the time when the death fish isn't present, and it's the only one that ever gives that result. And MC confirmed it.
@CravenLestat I make my sims learn the proper bait for all fish by catching them with the proper bait. I do fishing a lot, so I have them all memorized. If she can catch death fish in the wishing well, with angelfish, and it will register in her skill log that she has learned the bait, it's good enough. I'll try that as soon as I get into my game again. Otherwise, I guess I'll have to wait until I send her to Bridgeport to catch the LN fish, unless University has a graveyard with a death fish spawner. She's going to be leaving for Uni in two sim days. I'll be sending her angelfish with her, just in case.
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If other players' sims have caught death fish there, then I guess the spawner is just glitching out in my game.