"Mother's Day was meant to be — and still is — a celebration of a 19th-century ideal of motherhood, when mothers were supposed to dedicate themselves completely to nurturing their children and making a cozy, safe home," Prieto said.

Yet Jarvis became increasingly disturbed as the celebration turned into an excuse to sell greeting cards, candy, flowers and other items.

Jarvis became known for scathing letters in which she would berate people who purchased greeting cards, saying they were too lazy to write personal letters "to the woman who has done more for you than anyone in the world."

Before she died in 1948, she protested at a Mother's Day celebration in New York and was arrested for disturbing the peace.

The National Retail Federation estimates that Americans will spend $15 billion this year honoring their mothers. Dining out is expected to be the No. 1 expense.

In the end, Mason said Jarvis was bitter about what the observance had become and "wished she would have never started the day because it became so out of control ..."

"But when you look at Mother's Day as being her baby of sorts, you can understand her protectiveness of it."