Well, here is a high frequency loss much worse than yours. I use Phonak Naida Paradise with ear molds with a slight vent. Sound recover works. I hear birds pretty well. No doubt you need to back off the upper limits or your wife will definitley come with a lisp that seems like she is drunk. I fine tune my own aids, but a good audi should be good with sound recover.
Noisy restaurants will never be good, but Roger can help.