John, again I have to say - shame on you.
You know you cannot make a statement like:
she does not even have fused SIJ (she is B27 positive) yet, thanks to her diet
There is NO way to assign causality between those two variables.
Further, who cares? SIJ fusion has nothing to do with disease severity or prediction of later outcomes.
Furthermore, her father's hunched-over-ness has nothing to do with her own status or prognosis either, diet notwithstanding.
If you stick to FACTS people might possibly consider you TRUSTWORTHY.