Thank you so much for the wonderful comment! I completely agree about Martha, she is basically the only one who had a fulfilling future ahead of her before she met the Doctor, and in a way that kept him from becoming her everything—she didn't only have people to come home to, she had something for herself. There's so much about Martha, but I had to rewatch the series to appreciate it fully… At first viewing I was too annoyed that her crush for the Doctor seemed to take most of her characterization. There's definitely more to her, though :) And she especially showed it at the end.
Thanks again!