Miz.
miss
The honorific would be The Honorable Councilman/woman John /Jane Doe, and the salutation is Dear Councilman/woman Doe.
Dear Ms. Holly preferable to add a last name if possible.
"Major" or "Ma'am".
Madame Secretary
The appropriate salutation to use when addressing a woman in an email is "Ms." This is a neutral and respectful form of address that does not indicate marital status.
The proper salutation for a female can vary depending on their marital status. Mrs. is used for women who are married. Miss is used for women who are single, while Ms. is used for women who are both married and single. This salutation is safer to use if one is unsure of the woman's marital status.
http://wiki.answers.com/Q/What_is_the_salutation_for_two_men_and_one_woman"
Dear Counselors,
Yes a person can use a hyphenated surname (last name) which would be the woman's maiden name hyphenated with her married name. Example: Jane Doe-Smith. Often famous people or people known by their surname in a business they are running will keep their family name hyphenated with whomever they marry, but keep both the maiden surname and married surname is becoming more common practice. In ways keeping both names comes in handy if one is into genealogy.
What are the names of the Felton woman