Holly Lahti burst into the spotlight a week ago in a feel-good story about a single mother who won a $190 million Mega Millions jackpot... Lahti, 29, went underground with her two daughters immediately after learning she had won half of a $380 million jackpot in the Jan. 4 drawing. She has not been seen or heard in public since, though she has posted a message to her suddenly large group of Facebook followers.