Interesting because Katie was a Trump loyalist. Looking back at her Twitter, she also seems to be friends with Trump's kids. At that, on her twitter way back in March, she was going after Ryan and Rubio with a fervor defending Trump, including some of the tabloid smear type stuff.
I suspect this is either fake news, she became disillusioned, or maybe some of the leaks were sanctioned on purpose and she was doing what she thought her boss wanted.