Considering the low dynamic range of the cameras in mobile phones, i think they are more or less the same.
Actually... u can just do a search over google, or yahoo. And this is what i got:
Sony ericsson Satio, 12MP cam.
One website that you can check, they have quite detail review on the phone that you might want to take a look at,
Look through this website, decide on a few phones that you want, bring your wife down the shop, test out these phones that you want and get the one that she most lean towards. Plus you must also understand something, if your wife is already very used to a certain brand of phone (its UI and OS) it might take some getting use to when she bought another brand of phone. All this to take into consideration.