That would get you $12 million a year, increasing annually, and you could use the other 8 million that you took off the top for walking-around money...
With that extremely conservative approach, she should have $300 million+ sitting in her investments.
Plus there are accountants and attorneys who specialize in helping lottery winners protect their new found wealth.
In Florida there is one named Kurt Panouses CPA. The South Carolina person who won the billion plus dollar lottery hired Jason Kurland of New York.
At 80+, when she won the lottery, she may not have been computer smart to search for the right people to protect her interest but resources are out there if one is fortunate enough to win a large sum of money via lottery.