The personality that may hold the key to understanding what caused Kim's DID is "Ria Pratt," who thinks she is a 12-year-old girl.

Watch Ria Pratt's riveting explanation of how her childhood influences her art.

Back in the personality of "Patricia," Kim says watching "Ria Pratt" speak makes her sad. "But I don't have all those memories that she's got, so I'm hearing it like a third person," she says. "If I did, I probably would not be able to cope."

"Patricia" says she remembers parts of Kim's childhood, but never any abuse. "Not me. I haven't had any abuse," she says. "I'm lucky not to have had any."