You should consider printing out a nice short article on female orgasms and give it to your wife.
You should consider the possibility that she knows full well what an orgasm is and is blowing you off by faking it.
Next time you are with her, avoid direct contact with her clitoris. Many women find direct contact, at least initially, uncomfortable. Try manipulating the area immediately surrounding the clitoris, and to a lesser degree, the clitoral hood. Gentle broad stimulation rather than pinpoint is also a good approach. Go read some articles on stimulating your partner.
The real rub is that there is no absolute method for a man to determine if a woman has an orgasm. That part you will have to work out as a trust issue with your wife.
If anyone has a link to an article that seems to describe female O's well, please pass it on. I'll be looking in the meantime.
I grant the possibility that my W is faking it, but I am doubtful. I think it is more possible that she has never had an O and doesn't know what one feels like. She told me once that she can only recall having an O one time before she met me, and that was when her boyfriend at the time was laying on top of her kissing her.
I will try to be more indirect in my approach in the future to attempt to prolong the experience. I'll admit that my techniques do tend toward "pinpoint" rather than broad. Thanks for the tip.
I trust that my W is not faking it, until I receive unambiguous evidence to the contrary.
Chrome
"Recollect me darlin, raise me to your lips, two undernourished egos, four rotating hips"