my guess would be she looked for patterns that showed when they weren’t remixing the balls after a drawing. I can’t think of anything that would help prediction other than some failure to achieve pure randomness prior to a drawing.
Do the drawing. Turn the machine off. Do the drawing turn the machine off.
Of course, she could also be proof that insiders can fix the lottery.
... and the theory at the link. =:o)
Three of the wins were from scratch-offs.
Most lotteries use multiple ball sets and multiple machines.