That same report featured screenshots of text messages allegedly sent by the basketball player to Alexander, as well as copies of emails that the women purportedly received from her former attorney,

That same report featured screenshots of text messages allegedly sent by the basketball player to Alexander, as well as copies of emails that the women purportedly received from her former attorney, Lisa Bloom.

In response to the cease and desist letter, Alexander told E! News, "I feel like the whole issue originally stemmed from Tristan not wanting to choose a neutral setting for the DNA testing and using a Kardashian associated DNA Testing facility. I feel as if you really have nothing to hide then why not just go to a neutral testing site. And we both know what happened and exactly what went on between us, that's all I can say for now."

"After receiving the cease and desist letters from Thompson's attorneys, instead of complying with the demand that she stop defaming Thompson," Singer writers in the documents from the libel lawsuit. "Alexander doubled down on her specious claim that Thompson is the father of her son, posting statements on social media calling Thompson a liar."

Thompson is father to son Prince Thompson, 3, with ex Jordan Craig and to daughter True Thompson, 2, which he shares with the Good American founder.

E! News has reached out to Alexander for comment.