person A: My youngest sister is about to start her senior year of high school.  I'm so proud of everything she has accomplished.
person B: Oh that's awesome! I am an only child but I bet it's so cool to watch your siblings grow up like that.
person A: Yeah_comma_ she's adopted and has been with the family for 14 years now.  I always try and help her study when I get the chance_comma_ and I'm excited for this new stage of her life.
person B: That is amazing and so nice of you!