Sandra Bland, a 28-year-old activist who had posted a series of videos online before her July 10 arrest in Texas, had said in one of the videos that she suffered from depression and post-traumatic stress disorder.

"She was crying, and I could barely understand her," recalled Pyle, just released from jail herself Thursday. "I was like, 'It's OK, don't cry. It can't rain all the time, it will be alright.'"

Autopsy revealed that Bland had scars on her forearm that were consistent with cutting attempts. The roughly 30 marks were healing from 2-4 weeks prior to her death, Diepraam said.

Bland told her jailers she had attempted suicide before, indicating that she took pills after “losing a baby.”

The dashboard-camera recording from Bland's arrest also shows her warning the officer that she has epilepsy.

The relatives of the woman found dead in a Texas jail cell three days after being pulled over in a traffic stop are grappling to make sense of her arrest and death.

Sandra Bland, a 28-year-old activist who had posted a series of videos online before her July 10 arrest in Texas, had said in one of the videos that she suffered from depression and post-traumatic stress disorder.

Sandra Bland Said She Tried to Commit Suicide Before, Sheriff Says

But her sister says Bland may have made the claims to connect with her audience online.

"I think everybody has lows and highs and I think that, you know, she was having maybe a bad day that day," Bland's sister Sharon Cooper told ABC News today.

"You know, I have to reiterate that the totality of that video does show that she was leaning more towards an inspirational perspective at the end and had remnants of hope and it was really just a way for her to share with the mass audience, you know, what she was feeling and letting them know that if they were too struggling, that there was a light at the end of the tunnel," Cooper said.

Cooper went on to say that her sister had "absolutely not" been treated for depression or been diagnosed with the illness.

Depression and PTSD were not the only alleged medical issues that Bland had mentioned in the past. The dashboard-camera recording from Bland's arrest also shows her warning the officer that she has epilepsy.

Bland's medical history has come under scrutiny as investigators try to answer why she allegedly hanged herself in a jail cell July 13 using a plastic garbage bag liner.

Cooper confirmed that her sister had a miscarriage in May 2014. Bland had written on a jail intake form that she had tried to kill herself at that time, using pills, though Cooper was not specifically aware of that incident.

Bland's relatives are awaiting an independent autopsy report and though they have not seen the final results, Cooper said the preliminary results "show that she did have deep-tissue bruising to her back which is consistent with the officer having his knee in her back."