Sorry I'm just now getting back to all this. Yes, HB, I was referring to it's opposite of not supporting the immune system. BUT, you made a very important point, she would need to be careful with "standard" immune boosting things.
I'm going to layout an example here mainly so folks can understand. My AI is called interstitial cystitis. Most people's first thoughts are, "oh, bladder." You should take, cranberry, vit. C, etc. etc. All immune boosting things. But all of those things make my bladder worse. I have to avoid cranberry, vit. c, extra B vitamins, etc. or the pain is unbearable. But what HAS helped it and I would think should be valid for all AI's is mega doses of cod liver oil (which is pointed out as an omega 3), gentle cleansing teas with milk thistle to clean the liver, some homeopathic liver remedies, major diet changes, etc.
The thing to remember with all auto immune diseases is that they are caused by a toxic body. But if one tries to do heavy cleanses all at once it will cause severe pain/damage. My liver cleansing has been a process over two years. When spring comes I will do my first heavy cleansing since trying one two years ago when I almost shot myself for all the pain. It took 3 days to recover from one major cleansing tea! Eeeks.

Allinhistime, I think if your friend does the 2 tbls of CLO daily for supporting the right immune cells and then does gentle daily milk thistle teas to help cleanse the liver she will do well. Obvious diet changes are a must (no white anything, etc). One thing is to remember it takes time an patience to heal an AI naturally. But I have yet to find a doctor that even believes they can be healed so I'll take the slow approach any day!
HTH
patti