Dream of being a princess comes true for 8-year-old cancer patient

Princess Tara Sankner.

An 8-year-old girl diagnosed with brain cancer had her wish worthy of a princess come true Friday night.

On the clock, Tom Mitchell is an Arlington drug and alcohol counselor. Off the clock, he's gathering donations and using the Internet sensation of flash mobs - not to dance, but to drum up hope.

In Chantilly a charming prince visits hospital beds, recently visiting Tara Sankner.

"She's laying on my arm and says, 'you know, Tom, my dream is to be a princess.' And I said to myself we're going to make that dream come true," Mitchell says.

And a flash mob was the only way to get it done.

Virtually none of the mob that lined Stringfellow knows Princess Tara. But they all understand a mother's anguish.

"She's got three spots in her brain, front lesion, middle, and inside the brain stem, so its completely inoperable" says Tammy Sankner, Princess Tara's mom.

It's lymphoma and it's inoperable, but treatable - with 70 weeks of grueling chemotherapy. Tara's at week 8 now.

Princess Tara may not understand chemo, but she understands this fairytale has come true.

"Wow, this is awesome," Tara says. "I never knew I was going to be on TV. This is a surprise."

And when the flash mob silenced, Tara spoke loudly and from the heart thanking the group.

Tom Mitchell says he started helping children with cancer after his own 16-year-old daughter died following a long battle with Hodgkin's disease.