Twenty-year-old Brittany Macintyre of Nashua, N.H., was charged this week with soliciting sex at Tewksbury Public Library in Massachusetts, quietly.

Police told CBS Boston they got a tip Tuesday that someone was lending out her body at the library and they sent an undercover officer.

A detective said he sat at a computer and Macintyre immediately approached him with a pen and paper — striking up a silent conversation.

In true library form, the two passed notes back and forth, negotiating the deal: $60 in exchange for a sex act. Macintyre was then arrested.

“It’s not just a place for books; it’s a place for learning and being up-to-date,” volunteer Dave Marcus told WCVB. “It’s just unfortunate something like this happens.”

Macintyre was released on personal recognizance after pleading not guilty Wednesday in district court to sexual conduct for a fee, the Associated Press reported.

Lindsey Bever is a general assignment reporter for The Washington Post.