Washington ? A patient advocate being investigated for possible conspiracy to obstruct justice says the U.S. Supreme Court’s refusal to hear her appeal shows a lack of transparency in the courts.

The high court on Monday also refused without comment to unseal a challenge by Siobhan Reynolds to a subpoena.

Reynolds and her group, the Pain Relief Network, drew prosecutors’ attention for their involvement with a Kansas doctor and wife who illegally prescribed painkillers to dozens of patients who later died.

The U.S. attorney’s office in Kansas declined comment Monday.