Barnard College placed 13 students returning from China in voluntary quarantine over coronavirus concerns and then threatened at least one with a “conduct charge” because she didn’t answer the door for a meal delivery.

“I am helpless, angry, and this is unacceptable,” student Sylvia Su posted in a Facebook message describing her quarantine. “My parents paid my tuition for me to study, make friends, and to see another world where I can be a freer, more unique individual regardless of my race, nationality, and sexuality. I had so many dreams, ambitions and hope when I came back for another new semester, and this is what happened. like this.”

She posted an email sent by Barnard Deputy Dean Natalie Friedman chastising her for not answering the door, writing that “not being present suggests you may be going to class or otherwise using campus facilities” and saying she may be subject to a “conduct charge.”

“If you are not there when dinner will be delivered, I will need to follow up with our Conduct office,” Friedman wrote.

Su responded that she was either showering or in the bathroom when the meal delivery arrived.

“If basic trust and privacy cannot be given at this point, please arrange an exact time when food will be there at my door so I can arrange accordingly,” Su said.

Barnard apologized on its website last week saying an email to two students was “not accurate, appropriate or acceptable.”

Siqi Qin, an 18-year-old freshman from China’s Hubei province, the epicenter of the coronavirus outbreak, said she returned to school Jan. 19 and was impressed that campus officials reached out to her and gave her a thermometer to monitor any possible symptoms of the deadly illness.

But Qin questioned how the quarantines were handled, saying some students had already been back on campus for at least a week before they were asked to isolate and they were placed in a suite rather than individual rooms. She said the campus did not track their contacts before the quarantine.

“I felt like the job (was) not completely done,” she said.

Barnard said students were in a suite for only one night. All 13 students are out of quarantine now and none showed any symptoms, the school said.

“Barnard has and will continue to provide assistance and support to students who self-quarantine,” said spokeswoman Kathryn Gerlach.