When something is ambiguous, it doesn't have a single obvious meaning and it's open to more than one interpretation. When a story is ambiguous, a reader can make their own conclusions about what is going on. Authors often give their works an open ending - a type of ending where the conflict isn't solved. These stories can end in multiple ways, and authors leave it up to their readers to decide how exactly the story has ended.
The basic meaning of willing is, "an expression of desire and consent."
Here, the words, "As I see it we can have no new deal until" convey Eleanor Roosevelt's appeal for cooperation and participation to women and other groups.
She means that we cannot move forward without the cooperation of intelligent, hard-working and determined women who decide to take part in matters of the country.
