treatment, you were in the middle of ibf hoping to have a baby. >> yes. >> obviously the challenges are quite different now. >> they would like lie have to use a surrogate. >> we talk about it. haven't made a decision. >> sure, giffords has her moments of frustration and anger but that does not define her. >> not resentful? no. >> how is that possible? >> move ahead. move ahead. i'm happy. >> you are happy. where does it come from? how do you keep this kind of optimism given what you've been through and what you're still going through. >> i want to make the world a better place. i want to make the world a better place. >> cnn's dana bash reporting. these days for giffords trying to make the world a better place means lobbying for her former colleagues to pas new gun laws