OK, so there's no evidence that she's a "dem" yet. I did find, however, the footage of her screaming her head off in agony as Trump is being inaugurated. She's described as an "anti-Trump protestor", so she could be a dem, an independent, or a never-Trumper Republican for all we know.
She's definitely NOT one of us, she's one of you.
https://www.itv.com/news/2017-01-20/protester-who-screamed-at-trumps-inauguration-this-is-not-america
and better yet, this one contains the video and audio https://knowyourmeme.com/memes/luke-crywalker