Epstein was never even really "in jail" is the truth of the situation, so a headline conveying the idea that Fergie packed up the kids for a trip to the prison gates to stand there with balloons and "Welcome Home Jeffrey!" signs seemed preposterous on its face.
So I read the article, which as I suspected does not assert that Ferguson and her daughters in any way "went" to "celebrate" Epstein's release from jail, as is clearly implied by "took her daughters to celebrate".
What is suggested by the article though is that Epstein loaned her a lot of money a lot of times, and eventually viewed her as a leech because she didn't pay him back at promised. Ergo, if you view what Epstein wrote with that context in mind: "In the previously unseen emails, Epstein reveals that Ferguson was “the first to celebrate” his release from jail, “with her two daughters in tow.” " a likely reading here is that Epstein thought that the three were celebrating the fact that they could start freeloading off of him again.
In any case, there's no remotely solid evidence presented for what the headline is suggesting 
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