Niobe:

Niobe was a woman that refused to honor Latona (Leto, mother of Apollo and Artemis). Niobe did not believe that Latona was worth of praise because she only had two children (which was much closer to childlessness than Niobe who had 14). The baby factory also reminded everyone that the earth had refused to give Latona a place to give birth until the island of Delos took pity on her, and Niobe went on and on with reasons that she should be honored and not Latona. Now, this was not a very smart thing to do because Niobe had just successfully irked the mother of not one but two members of the inner circle of gods. So, Apollo and Diana began their terrorizing. First, they killed Niobe's seven sons. Then, they killed six of her daughters. Niobe pleaded with them to leave her just the one daughter, her youngest, and they decided to be merciful and spared her. Yeah right! No, they killed her, too. And seeing this, Niobe turned to stone, but not just any stone, a stone that sheds tears.