Oh my goodness, I have heard nightmare stories about Kaiser

I truly hope that they firmly diagnose her and start treatment quickly, whatever the diagnosis.
Since you all live so close, you could support her by just being there. Hang out with her whenever you can, help her with any chores that she may be too tired or feeling too badly to get done. Make her dinner. Hug her. Offer to take her kids for the day so she can rest. Well, you get the idea
Still praying for your dear friend