No way she is making that figure. First, I have been on Fiverr since 2014 or something. And her prices are really low to hit that mark a year. Because she has just 1 K reviews. I would believe that if she has 10 or 20 K reviews, then it would make sense. I have over 1K reviews, it is normal that about 50% of your clients leave a review.
So i guess over the time I have worked in about 3K-4 K orders. I am not 100% sure.
In a good months I make about 6k-10K and when i take less work in, i have about 2k-4k :
But i have different gigs that help me to make this money. If you have just one gig I do not believe it is possible.