you know what could really sell the mortivation of anakin turning dark to save his wife is to have padme actually be suffering from some virus that would take her life and the unborn child's life rather than her dying from childbirth
this idea comes from one of the star wars clone was series where she comes in contact with a virus called the blue shadow virus. in the episode anakin was kind of on edge that makes obiwan kind of suspisious to his realtionship with padme.