Things are looking up a little. She really likes the Purely Fancy Feast tonga tuna meal, and she's eating that. I think that has a fair amount of phosphorus, but it's a start. Starving has zero P, but that's not helpful. I also bought some chunk light tuna in water. I'm gonna try the eggs again, but break them up in little pieces, and soak them awhile in tuna water. Sounds disgusting, but she didn't like the eggs neatly folded per my preference :^D
Now, I just need to figure out how to some calcium carbonate in her...