Aisling Hubert, 22, is challenging a decision made by the former Director of Public Prosecutions Keir Starmer in 2013 not to prosecute two doctors who were secretly filmed allegedly agreeing to abort a baby because she was a girl.
The Crown Prosecution Service (CPS), then led by Mr Starmer, decided not to prosecute Dr Palaniappan Rajmohan and Dr Prabha Sivaraman because it was not in the "public interest", even though it was admitted there was enough evidence to prosecute.
Ms Hubert attempted to bring a private prosecution earlier this year against the doctors but the CPS blocked this, again in the "public interest".
She is now legally challenging the specific decision of Mr Starmer and the CPS not to prosecute.
The charity worker told The Daily Telegraph: "The refusal of the DPP not to prosecute has encouraged an 'abortion on demand' environment.
"If a doctor can openly admit on video that he or she would willingly sign off an application for abortion outside the legal guidelines set by Parliament, and the DPP publicly acknowledges that no legal action will be taken against the doctor for breaking the law, then the floodgates are open for abortion for any reason.
"There was very clear video evidence to put before the criminal court to demonstrate that the doctors were willing to break the law, but the DPP chose not to use this and simply turned down the case.
"It is my hope that the court will demand the DPP reviews the case again and the doctors will face full investigation in an open court of law."
Aisling Hubert is being supported by the Christian Legal Centre, which is part of Christian Concern.