Jewel, the one she labored so to bear and coddled and petted so and him flinging into tantrums or sulking spells, inventing devilment to devil her until I would have frailed him time and time.
— As I lay dying, William Faulkner (1897–1962), pub Jonathan Cape 1930
What's the literal (or figurative) meaning of "until I would have frailed him"?