Hi, Doc58, and welcome to the forum. If you know how to copy and paste, it would be best to do that with your post here and start a new topic of your own (give it a title.) Just hit New Topic instead of Reply. That way you will not get "lost in the cracks" and will get more responses.
The passing out I would think would be blood pressure too low or possibly vagus nerve syndrome. It's not from Lactulose or Xifaxan. In fact, due to your confusion and other symptoms, I would suggest that you increase your Lactulose.
Your wife may be in denial. Anyone who has liver disease, or is a potential liver transplant patient, is sick. And you can tell her I said so.
Hugs,
Connie