I am thinking of making a reservation at the Marriott O'Hare (right at the Cumberland Blue line stop) for November. I will be seeing a show downtown, then was thinking I'd take take the Blue line out to the hotel, because I will have an early flight out of O'Hare the next morning. Is the Blue line safe for that route at night, possibly for a single female? There may be more of us, but I just want to make sure I'm safe either way. Any advice is appreciated. Thanks.