One man's revolutionary/freedom-fighter is another man's terrorist.

But, leaving aside that political Can of worms, I'm pretty sure Blake was a straight up terrorist. While Ghira was the leader of the WF they were a protest group. When Khan became the leader, it moved towards being more violent (aka "revolutionary"). By the time to the Black Trailer, she was out on missions to bomb civilian infrastructure and trains. She only noped because she saw Adam not giving a shit about the civilian casualties, so it bears to reason that she must have participated in other missions before as long as it wasn't so overtly bloody. And I would even argue that she left because it was the 'last straw' type of deal, which would then mean that she was fine with casualties in the past (civilian, schnee, or military) but the train job was just the tipping point instead of a line in the sand.