Yeah whooshing in the ear is one of the annoying things us sufferers get.
Regarding the shunt thats something that your wife must decide on with your doctor,she has been taking medication for along time now and although Acetazolamide is a relatively `safe` drug, doctors seem to like offering you a shunt if you`ve had Psuedo for some years.
Personally if the meds are still doing a reasonable job of keeping the pressure down and your wife`s eye sight isn`t affected I`d be inclined to stay away from a shunt,but thats just me.
I was also diagnosed with pseudotumor when I was 18. I am now 26 and experiencing the same symptoms as you described. My right ear had had a continuous swishing noise in it for the past 4 months and no doctor thinks there is anything wrong with me, I was on acetazolamide when first diagnosed, but stopped when I became pregnant. although i do not have any advice, it helps to know that I am not the only one who this is happening to. Because of your post, I m going to contact my neurologist again to see what can be done.