Current prior: nothing has helped so far, so the odds of something she missed ended up being useful is pretty low.

This assumes she's good at sifting through the massive expanse of information available, and good at implementing the suggestions therein. These are two extremely questionable assumptions. Knowing nothing about her except that she has severe fibromyalgia and that she's the friend of a frequent poster on LW--two factors that hardly seem very relevant, and I'd put the likelihood of those two assumptions holding up to be very low. Quite bluntly, most people have no idea what's really out there. The Internet is a vast space.