Hi! I'm a fresh Premier Executive and I will be flying FLL(-ORD)-EWR-BOS on CO metal/UA G fare ticket on Feb 28. I'm flying with my girlfriend who is on the same PNR and who has no status with UA/CO. Now, I would like to avoid the ORD detour and I was wondering if I can call CO (or UA?) to change into a later non-detour flight FLL-EWR-BOS on the same day without fee using my Premier Executive status. I'm especially interested if we would have to pay the $75 fee for my girlfriend or if that would be free for her as well. Any help is appreciated!