"After this, Josh was determined to get well," his mother said.
Mitchell "continually ran into roadblocks" as she put her focus into finding help for her son, Butler said. "Access to long-term, in-patient mental health care is extremely limited. How can you appropriately treat your loved one's mental health challenges if access to necessary care is virtually non-existent?"
She "felt as if her hands were tied" but "she was doing everything she could to get him in treatment," Butler said. Mitchell enrolled her son in an outpatient program that was "the best available through insurance," she said.
A new diagnosis: Schizophrenia
That program concluded Thursday, with a doctor informing Marks that he believed he was suffering from schizophrenia. The new diagnosis upset him, Butler said.
"That's not what I am, that's not what I am," he told his mother, the lawyer said.
"He was very distraught by this new diagnosis," his mother said. "He was just coming to terms with having been diagnosed with bipolar disorder, but he just couldn't handle this new diagnosis."
Mitchell stayed home from her teaching job Friday to be with her son. "I was concerned about him; he just wasn't himself, so I stayed with him at my dad's home Thursday night after we left the hospital and all day on Friday," she said. "I only left for a couple of hours to pick up my daughter from school Friday afternoon."
She was stuck in Chicago's rush-hour traffic when she got a call from her brother saying that a neighbor saw her son walking around an alley with a gun.
"I rushed back to the south side to get to the neighborhood, and just started driving through the alleys near my dad's house looking for him," Mitchell said. "All I could think was I have to get to him in time."
She frantically drove through alleys searching.
"I saw Joshua laying there in the second alley that I turned down," his mother said. "I screamed for help and held him. I just didn't get to my boy on time. I didn't get to my boy."
Mitchell is determined to set up a foundation in her son's memory to help people with mental illness to address the same issues as Marks. "I am not done, this is not over," she said. "I am going to make sure that Josh's voice and dream live on by fighting for mental healthcare treatment."
While police work to trace how Marks got the handgun he used to kill himself, his family is also seeking answers.
"We live in a country where anyone can buy a gun on the streets at will," Butler said. "We know that Josh paid little or no money for that gun, because he just didn't have it; he was unemployed and in treatment full time. So with no money, how did he get this gun?"