You know the Myers-Briggs personality types? She's an ISTJ. I'm an ENFP. She always used to say she felt like a chicken raising a duckling.
But no matter what, no matter when, I could always bring a friend (or friends) home to hang out or for dinner. Despite how quiet she liked things to be, our house was always open to my friends, our table was always ready for an extra plate. I know she did that for me, and it made a HUGE difference in how I grew up.
The question is could I be that unselfish if I have a kid who's a real introvert. :)