One of her aids may have written the original tweet for her, therefore her deer in the headlights response. She probably has no idea what she wrote.
19 Dec 2018: National Review: The Senate Codes ‘Gender Identity’ Into Anti-Lynching Bill
By Madeleine Kearns
A source on the Hill told me that many Republicans are uneasy about the coding of “gender identity” as it had not appeared in the original text. Some tried to strike it from the bill, but these efforts were unsuccessful. This is partly because “gender identity” was slipped into the bill at the last minute. Apparently, this amendment was made to the manager’s package put together by judiciary staff — which are intended to be uncontroversial clarifications — led by Republican Senator Chuck Grassley. The Democrats were then able to weaponize this as serious opposition could be interpreted as Republicans being opposed to anti-lynching legislation.
Though the bill will be sent to the House, it is unlikely to be voted on. Nevertheless, the casual insertion of “’gender identity” into federal law sets a dangerous precedent...
https://www.nationalreview.com/corner/the-senate-codes-gender-identity-into-anti-lynching-bill/
She knew that was why she hesitated and looked to her aides before saying the case was still unfolding. She knew she was caught right there.