A transgender girl who attends North Dallas High School in Uptown said an administrator asked her inappropriate questions regarding her body after a student complained about her using the women's restroom.

Jamie Lynn, 16, said she's been using the women's restroom for a year and has been friendly with the girls there, but one student complained Monday, KXAS-TV (NBC5) reports.

A Dallas ISD spokeswoman said the incident prompted a meeting between Lynn, two school resource officers and an assistant principal, who Lynn said started an inappropriate line of questioning.

"He asked, 'Do you have your boy genitals and is the top real?' meaning my breasts," she said. "That's something that made me feel really bad because I feel like an assistant principal shouldn't ask anyone that."

The school is investigating.

Administrators also told NBC5 that they've had Lynn using the restroom in the nurse's office, but she denied that claim.

Regardless, the district has no policy to go by so school officials said she must use that bathroom from now on.

"I feel isolated -- like something they want to hide," she said.

A Texas judge ruled against federal government's guidelines for transgender student bathroom use, which would have required schools to let transgender students use the bathroom they want. The judge said schools do not have to abide by the guidelines while the case is being heard.

Last month he said that his temporary injunction applies nationwide, not just to the 13 states that sued.

The Obama administration has appealed the ruling.