If things are looking "grim" with the liver transplant, that suggests there might be a problem with rejection - always a concern with organ transplants. It's a fine line - too much immunosuppressant drugs and she runs the risk of dying from an infection; too little and the body will reject the organ. Hardly seems like you would schedule a trip to Mexico if complications were happening, but people do live in denial. Or we also know your ex can certainly lie about things.
