Not sure how accurate this is, but here's a graph of the data.
https://www.macrotrends.net/datasets/3591/us-gasoline-prices
When did she say this? Jan-25->Jan26 it looks like a 30 cent drop. Goes ape shit after that, but a few months ago it was a decent drop for about a qtr before the forever spike begins.
Would have been a really good time to buy if you could start a war and jack up the price.