Not sure if I am reading your post correctly, but I am assuming you mean YOU received the betamethasone shots, at 26 and 32 weeks (not your daughter).  Also, that the units for 17-OHP that you quoted were correct....i.e. 82 ng/ml (equiv. to 8200 ng/dl) at birth, then a follow-up of 211 ng/dl, sometime later (reflecting a drop of 8000 ng/dl in her 17-OHP number.) 

If so, in my opinion, I don’t think you need to worry about CAH.  The 8200 ng/dl was high, but then, your daughter was born 6 weeks premature, and high values are normal in preterm infants, including those without CAH.  More importantly, the 17-OHP levels came down to normal ranges, the way they should in a healthy infant.  (I am assuming your daughter was never treated for CAH, since you did not mention that.) In addition, all the electrolyte numbers look fine, so---in my opinion---I don’t believe there is much real reason to be concerned about CAH (again, unless I’ve misunderstood something that you’ve said.) 

Not sure why your doctor said the steroid shots could leave her hormone levels higher for a year or so.  If anything, the steroid shots would lower your daughter’s adrenal hormone levels, if she actually had CAH.