I am inclined to agree with you on this point. But I have to wonder if this is a misinterpretation of what she actually said. Or maybe she said it because it was one of those stupid things you say when you are really angry, that it is a reflection of how much she is hurting.What is your wife suggesting as an alternative solution? That you put her in care and never visit her?
I'm clearly a dissenting voice in this thread (maybe because I'm a man), but your wife's postion on this last point strikes me as particularly unfeeling.