Lady” is not used before the lady’s first name unless she is the daughter of a duke, marquess or earl; those who come by the title through marriage u… - Judith Martin

But why bother with guests at all? The virtual community is larger and less trouble than the relatives and friends upon whom self-fundraisers had been drawing. The pioneers in using the Internet to ask strangers for money patterned themselves on the causes of reputable charity — such as donating toward education or helping the ill — except for designating themselves the sole beneficiaries. A breakthrough was achieved when it was discovered that asking for money for luxuries also brought results. These practices are no less vulgar for having become commonplace. There is no polite way to tell people to give you money or objects, and no polite way to entertain people at their expense. Begging is the last resort of the desperate, not a social form requiring others to help people live beyond their means.

Miss Manners’ meager arsenal consists only of the withering look, the insistent and repeated request, the cold voice, the report up the chain of command and the tilted nose. They generally work.

"DEAR MISS MANNERS:
Should you tell your mother something if it is important when she is talking to company? I am six.

GENTLE READER:
Yes, you should (after saying "Excuse me"). Here are some of the things that are important to tell your mother, even though she is talking to company:
"Mommy, the kitchen is full of smoke."
"Daddy's calling from Tokyo."
"Kristen fell out of her crib and I can't put her back."
"There's a policeman at the door and he says he wants to talk to you."
"I was just reaching for my ball, and the goldfish bowl fell over."
Now, here are some things that are not important, so they can wait until your mother's company has gone home:
"Mommy, I'm tired of playing blocks. What do I do now?"
"The ice-cream truck is coming down the street."
"Can I give Kristen the rest of my applesauce?"
"I can't find my crayons."
"When are we going to have lunch? I'm hungry.