Did she listen to the speakers in a dealer's showroom or at your house? 6' ceilings are extremely low, so you should probably get some panels mounted overhead first and foremost to try and 'disappear' the ceiling. No doubt you are getting a lot of early reflections and comb filtering from the ceiling that are coloring what you and the Mrs. are hearing.
Speaker recommendation for married couple
I am the guy who opened the thread "Harbeth Love". Unfortunately, wife didn't like them at all. She listened to ATC, nope. Spendor? Nope. I do trust her ears too but we need speakers that we both like. I remember her liking this Sonus Faber speakers (can't recall the model but I know newer Fabers). She also likes KEF LS50 which I find good but not outstanding. Any help for this married couple?:)