uhhhhhhhhh ok
spiffy take chocolate cake, not bars. you can find the cake slices in the study and the hanging gardens
if your referring to the crystal in the hanging garden, it can be found at the top. if your referring to the crystal on the balcony in the first floor, you can find it by heading down below where you find wendy
also you can't find the last bit of food for the spears in the current version as it's not in the game yet. if i remember right they should say as much after you feed them enough