A 16-year-old pro-life activist spoke on The Kelly File after she was angrily confronted by a female college professor, who took away her sign and then called her a "terrorist."

Trace Gallagher reported on the stunning details after Thrin Short and her older sister Joan, 21, went to the campus of Cal-Santa Barbara to hand out pro-life pamphlets during a March 4 rally.

The sisters say they were approached by a feminist studies professor named Mireille Miller-Young, and now accuse the educator of assault. Their demonstration was being held in an area of campus called the "free speech zone."

Here's more from the FoxNews.com exclusive:

“Before she grabbed the sign, she was mocking me and talking over me in front of the students, saying that she was twice as old as me and had three degrees, so they should listen to her and not me,” Thrin Short wrote in an email to FoxNews.com. “Then she started the chant with the students about ‘tear down the sign.’ When that died out, she grabbed the sign.”

With the graphic anti-abortion sign in hand, Miller-Young, whose faculty web page says she specializes in black cultural studies and pornography, then allegedly walked through two campus buildings as Short, her sister and two UCSB students followed closely behind. Short captured much of the incident, which she charged was a "deliberate" provocation by Miller-Young, on a cellphone video later posted to YouTube while her sister called campus police. Miller-Young pushed Short at least three times, the student alleges, as she tried to stop an elevator door from closing as the educator stood inside with her sign, Short said.

“I explained how I had been trying to keep the elevator door open with my foot, because I thought the police would be there any second, and that’s when she pushed and grabbed me,” Short’s email continued. “She then got off the elevator and tried to pull me away from the elevator doors so the others could get away with the sign.”

Short said she suffered minor injuries during the melee — scratches on both wrists — and said campus police are now reviewing the video.

Miller-Young declined to comment when reached by FoxNews.com, referring inquiries to her attorney, Catherine Swysen, who did not return a message seeking comment Wednesday.

Several messages seeking comment from UCSB police spokesman Sgt. Rob Romero were also not returned, but school officials acknowledged the incident in a statement.

“The university is aware of the incident and it is being reviewed by the appropriate offices,” spokesman George Foulsham wrote to FoxNews.com. “It is university policy not to discuss personnel matters.”

Thrin Short discussed the incident last night with Megyn Kelly, saying "no one has the right to take someone else's property like that" even if Miller-Young felt the sign was offensive.

"I'm sorry if these signs offended her in any way but after all, she does show porn to her students so she's not really the one to talk about offending images," said Short.

A student of Miller-Young defended her, pointing out that "she’s pregnant, so she’s very sensitive to horrifying images" like the ones brought to campus by the pro-life group, named Survivors of the Abortion Holocaust.

Joan Short said she does not believe the demonstrators went too far by showing the graphic images.

"What is so much worse than the pictures is the violence itself and if we have to show what is happening out there to stop it, then we have to go there," she said.

Watch the full interview above, and check out The Kelly File, tonight at 9p/12a ET as Megyn and Frank Luntz look into what Americans think of President Obama's power grab.