Who took the eggs?

For about a week we had been spectators of a golden hooded tanager's nest. There was a pair of them flitting around the area for a while, and then when the gardener inadvertently whacked off the leafy branches of the tree where they had a nest, we had a particularly good view into these bird's domestic scene, albeit a very exposed condition for mama and eggs. In Spanish, this bird is called the bird of seven colors, and indeed, if you look carefully you can find creamy gold, black, white, and the remaining colors all variations on blue. There were two eggs in the nest and mama was very diligent, even through a few of our recent rainstorms involving thunder and lightening. She maintained her post sitting on her eggs for hours. Then, two days ago, before lunch Rebeca noticed the eggs and then right after lunch they had disappeared. We were so sad. Most likely a larger bird, perhaps a hawk or a jay, came and gobbled them up. Several hours later in the afternoon we saw mama come back to a nearby tree and sing her heart out, then she flew to the nest and looked in intently one last time. Did she feel the same sadness that we felt? At the very least it seemed she was confused and felt that something was really wrong with her world upon viewing her empty nest. Hopefully, she's still have time to find a more hidden place for a nest, lay her eggs, and be able to see her babies fly from the nest.