Since she has a variety of inter-related ailments throughout her body, rather than trying to address each one on an individual basis, have you tried to work holistically with her body as a whole being, say with The Politics of the Body or The Plasma Flaunt?
For all you know, you might well be overwhelming her system which would slow down her healing and relief. Maybe it’s not that fields are less effective for her but her extensive systemic imbalances aren’t being addressed by your symptomatic approach?