You'll get a voodoo shopping list from her. The 4 items are from the dead, head, thread and body. 1. Item from the dead - Largo's ancestor. At the toll bridge, look at the sign. Pick up the sign, you'll get the shovel on it.
Cemetery Walk to graves.
Look at tombstones. Locate Largo's ancestor grave. Use the shovel to dig the appropriate grave. Get a bone. Item from the body - Largo's body fluid.