When she's not sick with N and D, is she feeling better/worse/same overall? Less or more pain/energy ?
If you asked Jim Humble, he would probably tell you to administer Miracle-Mineral-Supplement via IV. He gives the IV dosage in the 2nd book, if I remember. Is there a doctor you know who might help you administer IV Miracle-Mineral-Supplement ?
I've read testimonies that mentioned that marker number stayed high (or went higher) for 3 months, but the patient FELT A LOT BETTER, even before the marker numbers started to plummet. And they really dropped fast once they started. Hopefully, this is what's happening with your mom.
This must be very hard on you. Our prayers and empathy go with you.