Aisling Hubert, 22, is challenging Keir Starmer, who in 2013, said it was not in the public interest to take the pair to trial for breaking abortion laws.
Dr Palaniappan Rajmohan and Dr Prabha Sivaraman were secretly filmed by the Daily Telegraph 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 even though it admitted there was enough evidence to get a conviction.
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 decision at the Royal Courts of Justice.
"There is a huge injustice here. There was clear video evidence that doctors were willing to offer abortion on the grounds of the child being the 'wrong' gender," she said.
"That is against the law and yet the CPS refused to prosecute, refused to release important video evidence and then squashed my attempt to fight for justice.
"Gender-abortion is a horrible practice. I brought prosecutions because those who should have done so were turning a blind eye.
"We have seen the establishment stand silent in the face of the abortion industry, hoping that the horrors will be swept under the carpet and the problems go away. But justice demands that something is done and that people are held to account for their actions. The law can only protect if it is enforced.
"The failure of the DPP to prosecute gives the impression that we have abortion on demand, for whatever reason.
"Every baby is precious in God's sight and we must speak up to protect them and challenge the culture of death."