When I see the word "Mom" that pretty mean a none audiophile and would likely be someone that would prefer to have simple and convient of remote control.
With that in mind I think that getting Omega speaker or Cambridge won't be a good idea. Like Bemopti123 says the Omega speaker based on Fostex driver would sond forward and have that imfamous "shout". Of casue Fostex driver are capable of great sound and great dynamic but they need to be tweak somewhat. Getting a Cambridge would be quite expensive for something without remote and no tuner.
Maggie are great speaker but they do need some power to fill the room and most importantly they need room behind them. For a "Mom" in small apt that could be a problem. If she get Maggie and ended up putting them against the wall than they will sound bad. And I think the MMG cost $550 now.
I would look for a simpler system. A JVC digi reciever is a good start and give you choice of expanding the system in to surround sound. I have not heard it myself but seem to have a good raves, I'm planning to get one myself soon for a small surround system. For speaker.... (well personally I would go for DIY or kit like those from Madisound.) How about Epos ELS3? Or one from PSB? That should give her an excellent start.
Oh! wait how about this for speaker?


My own personal "Pipe Dream"

Anyway, probably not

Maybe I will make 3 more to go with JVC digi surround sound reciever than add a sub.
Anyway, goodluck and keep us updated. Let us know how things turn out.
Good Luck
Buddy

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