Fulton County District Attorney Fani Willis will not recuse herself from the investigation into former President Donald Trump‘s efforts to overturn Georgia’s 2020 election despite calls from conservatives to step back from the case over an alleged relationship with one of the special prosecutors.

Willis’s decision to stay stems from her concerns that leaving the case would essentially end the investigation into Trump, sources close to the district attorney’s office told CNN. Her investigation is one of four criminal cases against the former president that handed him 91 felony charges, several extending from his efforts to prevent Joe Biden from becoming president.