What does Tom see up in a tree when he is looking for his wife? What is his reaction? Why?

Tom found his wife's apron hanging in the branches of a tree near the Indian fort, with only a heart and liver tied up in it. According to tufts of hair and footprints at the scene, it seems she'd at least put up a fight against Old Scratch. Tom is more upset about the loss of property; in reality, he thinks Old Scratch has done him a favor by getting rid of his irritating wife.