Astrud's Now Sound LPs are really good - nothing particularly Brazilian about them, except for the overall international/jet set aesthetic that is found in so much of the young adult music of that era.
It is interesting that the Brazilian stuff is what has remained in print, but not the now sound stuff. This gives a distorted picture of her as a "Brazilian" singer when in fact she was a pseudo-exotic pop singer, not unlike Claudine Longet.
So, I think she should be appreciated on her own terms - if at all - and not as something we expect her to be because of revisionist marketing.