Women are Miss as little girls and young women.
Ms. as they age or I should say become "of age".
Mrs. when they marry.
Ms. when someone isn't sure if they are married.
Ms. sometimes because it is less syllables than Mrs., and people get lazy.
Mrs. still when widowed.
Dr., Doctor, The Honorable, The Reverend, many a military title, etc., are other titles that a woman could possibly acquire in her lifetime. (I know this is the same for men, but just wanted to point it out.)
Ms. still, even if they acquire another title, when someone is unsure or unaware of that title.
Interesting... And this is just "Titles." No wonder some women sometimes struggle with identity issues.
Anyway, Happy Birthday Mrs. Kelley L.--your first birthday as a Mrs.! I suppose I should have said Happy Birthday Mrs. Rhett, but you know me ;)...I hope you have fun on your trip to Tucson!