Hello glad your mom is feeling better. It is completely normal to feel weak after Cdiff. I myself took S Boulardii for over 6 months to ensure no relapse and started eating cooked vegetables to get these good gut bacteria back in my gut. And slowly started eating all the raw greens. Sugar feeds bad bacteria so I stayed away from sugar no sugar at all cost. No fried food and no white bread It takes a while to feel like normal again it took me almost a year. Hope she gets better soon