"The guys I get it from sell it in what's called balloons," he said. "Some of the guys sell it in actual balloons, but the guy I'm getting it from today, he wraps it in tinfoil. They still call it balloons because that's the street name. Typically, people get seven to 10 of these balloons for $100, or $20 apiece."
He later slipped into the dealer's car, and bought $100 worth of heroin while driving around a leafy, residential neighborhood in broad daylight. The informant said when he was actively using drugs, he would make this trip at least once a day, buying enough drugs to support his own habit and also to sell to other heroin addicts in his town.
Doerr has been making that trek to Columbus for years. In fact, when ABC News first encountered her in July, she had just come back from a trip to Columbus with her on-and-off-again boyfriend. They have been shooting up together since they were high school sweethearts in Plymouth, Ohio. He asked us not to reveal his name.
"I mean, when I'm not using drugs, I'm a totally different person," he said. "Really, I mean when I'm on dope it's just like, it twists me inside out, and I just become a totally different person. I'm ruthless, I'm conniving, I'm a cheater, I'm a liar I'm ..."
"A thief," Doerr chimed in.
He said, "It's become an epidemic," describing the heroin abuse in his hometown. "It's like a plague, seriously. People I went to school with are no longer around, dead [or] in prison." He said he knows 17 people who have died from using heroin.
Later, the two shoot up, mixing a hard chunk of heroin with water and boiling it down into a dark, brown liquid that filled their syringes. Doerr struggled to find a vein that hadn't already collapsed, and as she looked for one, she showed us the bruises that cover her body, evidence of her seven-year heroin addiction
But she said she wanted help. And soon after that, Doerr was treated at a Columbus hospital in a detox program specifically designed for pregnant addicts.
The hospital got her off heroin using the drug methadone -- which is accepted as a safe method for pregnant women, and their unborn children, to wean their bodies off a narcotic. But there is no methadone clinic back at home for her to maintain that treatment.
The next time "Nightline" met up with her, in August, she was shooting up again.
Doerr said she resorted to heroin because she can't quit cold turkey.
"It's like food to my baby," she said. "It's like food everyday. That's why I'm saying it has to have it everyday. Just like I do.
"The fact that I've been using for seven years, each time you get strung out and each time you go through detox it gets worse and worse," she says. "And the fact that I'm using, you know -- the amount that I'm using a lot -- I've cut back half of what I was using. I was using six balloons a day. Now I'm using maybe three."
Total detox, Doerr says, is unbelievably difficult.
"I might make it to the second day and I'm just spazzing out and panicking. And the second day I'm trying to find a fix. I can't do it," she said. "People say, 'Well, if you love your daughter, you will shape up.' It's not really a question of loving my daughter. I'm a mother. I love my daughter as much as any mother could love their daughter. It's a matter of loving myself enough and doing what I have to do, you know? It's not a matter of how much I love her."