Unfortunately, yes. She was reported as being seen at the original concert, and then ostensibly spent the rest of the time attempting to tail certain individuals.

Only two actual confrontations occurred, though, mostly thanks to the protective wards Childermass commissioned from the Starlight. You were likely covered by the one protecting Steven given your connection, and Sans spent most of trip out of commission.

Unfortunately, she did manage to leave a mark on Childermass, but given that he's still alive, its all much better than it could have been!