Maybe because she was the snitch who pointed the finger at Seth Rich and knew they were going to 'teach him a lesson' as John Podesta had threatened to do according to one of his inter-office emails. Maybe she was even tasked with being the informant and followed him to where he went after work to keep them posted as to his whereabouts.

That could explain why she was coincidentally already at the hospital in the middle of the night with her wife 'The Mayor' awaiting his arrival at the ER. And then when he actually died, she may have realized they would try to 'tie up any loose ends'. That's my thought.