Scam or authentic? Is $758.7M Powerball winner Mavis Wanczyk really giving out $5K to 100K followers on IG?

And the winner is ... Mavis Wanczyk.

Wanczyk, 53, landed the largest single lottery jackpot ever in the United States -- the $758.7 million grand prize in Wednesday's Power Ball.

The winning ticket (6, 7, 16, 23, 26, and Powerball number 4) was purchased at the Pride Station & Store in Chicopee, Massachusetts.
Wanczyk said she discovered Wednesday night while leaving work at the Mercy Medical Center that she had won. A co-worker looked at her ticket and told her she had won. He told her to immediately sign the back of the ticket. She couldn't believe it.
"I couldn't drive anywhere. I couldn't do anything," she told reporters. She said her co-worker followed her home to make sure she was OK.
Right.
Congratulations to Mavis!
But that is NOT the story.

Is she really doing this?: