She had to have had a settlement to sign the NDA, which was part of the settlement.
As I said, we do not know what the NDA contains without seeing it. It sounds to me like it's a simple contract. You can't settle a lawsuit without filing a lawsuit.
There are two ways these things can work. (Channeling my naming/blaming/claiming lecture.) First, an individual recognizes an injury, picks someone to blame, and then claims by filing a suit. At that point, the suit will go forward, will be dismissed on summary judgment after the defendant has requested it, or, as in the overwhelming majority of cases, it will settle. The lawyers will reach an agreement where something in the middle happens -- the plaintiff generally doesn't get all the relief requested, but the defendant pays up something. The settlement may incorporate other provisions; in personal injury and other kinds of tort cases, a NDA is a very common provision, as is a clause in which the defendant denies culpability. A settlement usually also incorporates an agreement by both parties not to make further claims.
However, sometimes the PROSPECTIVE plaintiff names the injury and identifies someone to blame, but before initiating a claim in the legal system, goes directly to the PROSPECTIVE defendant and says something along the lines of, "you've injured me in a way that implies legal liability." At that point, the prospective litigants may enter into a contract. The contract in this case would generally involve a promise by the prospective plaintiff not to sue and could also incorporate a NDA. The attorneys would negotiate liquidated damages for breach, usually a provision that if the victim breaches by disclosing or suing, the victim must pay back the contracted amount and possibly something beyond it. I suppose one could also negotiate specific performance as a remedy, requiring a court to dismiss any lawsuit filed.
What is probably happening here is that Manly is laying the groundwork for a claim that the NDA contract (not settlement!) should be void as against public policy but Maroney should be able to keep the money.