Bonjour Madame if she's married, or has been married.
The French language has always kept the word Mademoiselle for unmarried women. However, the Academie Francaise, in their Immortal wisdom, has decreed that single women over 21 have the right to be called Madame if they wish it. It's generally more appropriate to use Madame than Mademoiselle.
If you want to chance it, it's bonjour Mademoiselle.
bonjour, belle dame
Informally, "Good morning to you!" would be "Bonjour à toi!" in French.
meaning "hello" : "bonjour"meaning "have a good morning" : "bonne matinée"
yuugale
Bon matin.
Bonne Madame
I assume that you're asking how to say good morning in French. If that is the case, the answer is bonjour.
mon cheri
bonjour
bonjour à toi
Bon matin.
Bonjour à toi