Ashley St. Clair claims Elon Musk is attempting to control her since she announced that she gave birth to their 6-month-old son.

On Monday, March 31, Laura Loomer posted a tweet of the 26-year-old influencer selling her Tesla to supplement money for child care on X. Shortly after Loomer uploaded the video, Musk, 53, denied St. Clair’s claims that he “financially retaliated” against the son that they share. Adding, “despite not knowing for sure” if the child is his, he said he’s given her child support and “given Ashley $2.5M and am sending her $500k/year.”

Less than two hours later, St. Clair responded to Musk’s tweet, saying he “refused” to get a paternity test. “Elon, we asked you to confirm paternity through a test before our child (who you named) was even born.”

“And you weren’t sending *me* money, you were sending support for your child that you thought was necessary… until you withdrew most of it to maintain control and punish me for disobedience,’ ” she continued. “But you’re really only punishing your son.”

St. Clair added, “It’s ironic that your last effort in court was to try to gag me while you use a social media channel you literally own to distribute derogatory messages about me and our child to the entire world,” Adding, “It’s all about control with you, and everyone can see it.”

“America needs you to grow up, you petulant man-child,” she concluded the tweet.

A representative for Musk did not immediately respond to PEOPLE for comment.

The pair’s social media interactions follow St. Clair’s comments to the Daily Mail on Saturday, March 29. During the conversation, she was filmed handing over the car keys to her Tesla Model S. She told the outlet she was selling the car to compensate for the alleged “60 percent cut that Elon made to our son’s child support.”

The reporter asked St. Clair if she felt Musk’s actions were “vindictive” in any way. She responded, “That’s his modus operandi, when women speak out,” adding that she and the SpaceX CEO last spoke on Feb. 13.

St. Clair announced on X on Feb. 14 that she and Musk share a son. He is also the father of 13 other children, whom he shares with three other women.

A week after she announced they share a child, she filed a petition for sole custody with the New York Supreme Court. She claims that Musk was not present at the infant’s birth and “has met him only three (3) times and has had no involvement in his care and upbringing.”

Weeks later, on Thursday, March 20, her legal team exclusively shared a statement with PEOPLE: “Elon Musk has financially retaliated against his own child and reduced his financial support substantially and unilaterally.”

“He did this after Ashley was forced to bring this matter to court, when he refused to respond to her many private attempts to resolve this matter without publicity,” her legal representatives, Karen Rosenthal, Bikel Rosenthal & Schanfield LLP, alleged to PEOPLE in a statement.

“At the same time, he filed an emergency application to gag Ashley and prevent her from communicating about his actions. The judge denied the emergency nature of the application, even though it is still pending,” they continued.

“Ashley is vigorously opposing this application in order to preserve her right to speak out. All while Mr. Musk fashions himself a first amendment warrior and freely communicates via his owned social media platform,” they claimed. “Given that Mr. Musk is dedicated to transparency in government, it would be helpful if he administered his own life by the same principles.”