INDIANAPOLIS -- An Indianapolis woman who pretended she was pregnant, stealing thousands of dollars from prospective adoptive parents, apologized Monday for what she called a stupid scam.

Amber H. Jackson, 28, was arrested Friday on three counts of forgery, four counts of theft and three counts of adoption deception.

Investigators said Jackson was involved in at least four fraudulent adoption scams involving couples from LaPorte, Columbus and the state of Utah, and falsified medical records and other documents, while claiming to be carrying twins.

Investigators said Jackson was never really pregnant, but received more than $6,000 in financial assistance from the agencies and couples.

She told 6News' Jennifer Carmack on Monday that she was sorry for what she'd done.

"I know that I'm sorry, and I want my kids to know that I'm sorry, and I want the families to know that I'm sorry," said Jackson, who has five children.

Investigators said Jackson's stories began to unravel as she moved the supposed due date of twins from Jan. 16 to March 22 and March 30, using three Social Security numbers and five dates of birth.

Linda Wrestler, branch director of Bethany Christian Services, one of the agencies involved in the case, said she couldn't discuss specifics, but reassured potential adoptive parents that instances of fraud are unusual.

"I think it's very rare," she said. "I mean, we work with so many young women who are so sincere and so want to find a good home for their baby."

Each birth mother who uses the agency is required to sign a form saying she is in fact pregnant and that adoption fraud is a crime punishable by jail time and a fine.

The parents who thought they would bring home Jackson's baby said they are devastated.

"It's just terrible the way that we were played," said Clayton Younggreen, of LaPorte. "It's just horrible. I don't know what could make somebody’s mind work like that."

Jackson was being held Monday at the Marion County Jail on $100,000 bond.