Jack the Ripper is a little girl! In order to save his girlfriend, Colin followed an order and bombed a bus. Chased by the police to a dead end, he decided to commit suicide when one little girl showed up and saved him. Who are you? I’m Jack the Ripper, and I will be your spirit servant.
Her actions overall make sense, his do not. Dude has been saying she's nothing to him, so why would she assume otherwise? Like seriously, use an ounce of sense.