Miss B. knows how to regulate her feelings better than this poor little creature. Miss B. would never have committed herself as that imprudent Amelia had done; pledged her love irretrievably; confessed her heart away, and got back nothing--only a brittle promise which was snapt and worthless in a moment. 
A strong-minded girl knows how to regulate her feelings better than this poor little creature, and would never pledge her heart away for nothing but a brittle promise.
