A Cartersville woman is locked up, accused of stealing money from her company.  A lot of money.

"Right now the total is $585,000," says Cartersville Police Captain Mark Camp.  "That amount could go higher as investigators look farther back into the records."

Jennifer Streetman, 39, worked for Telenet Systems of Cartersville for 17 years, serving as the company's office manager.

That is how she was able to pull off her embezzlement, police say.

It started, they believe, in June 2012.

"When someone sent an invoice for payment, she would pay the invoice," Camp tells WSB.  "Once it got paid, she would recreate another invoice and she would print a check to herself for the same amount."

The scheme was not discovered until earlier this month, when, police say, Streetman slipped up.

"She received the invoice from a company and created the fake one and paid herself," Camp says.  "The thing is she forgot to pay the company that sent the original invoice.

"When the owners of the business went back to check amounts they found that, yes, that amount was paid from that company's invoice, but the check was made out to Ms. Streetman," says Camp.

Now Telenet Systems is going back in their records, trying to determine when the embezzling began.

"As they go further back into their records they're finding more and more checks in her name," Camp says.

Streetman was arrested when she turned herself into police.  She is being charged with 15 counts of Theft by Conversion.