Can anyone please give me the email address of Astronaut Sunita Williams?

Answer 1

This is the only way that I can find:
http://www.nasa.gov/about/contact/ask_nasa_form.html

Fill out your name and e-mail address at the top and be sure to write: "I want to e-mail Ms. Sunita Williams" on the subject line.

If you write the letter and ask them to forward it, they probably will, or you can ask for her e-mail address and they might give it to you.

.