I'm not related.
I have done some research on other families in Chicot County, and I find that the census taker was not particular about spelling names the way that the family preferred, he spelled it as he thought it should be.
On other occasions, I have seen the family send the worst speller in the family to the courthouse to fill out death certificates.
Then on other occasions I have seen a name evolve over the years from a formal spelling to being spelled the way it sounds when pronounced with a Southern accent.
I make no assertion that these censuses are for sure the family that you are looking for. But Susan is the right age and has parents named Robert and Amanda(Mandy). I can't speak for Arkansas, but in southern Mississippi we are very likely to pronounce Bartlett - Botley.