Not sure what NTRP level you're referring to.
I've seen many winning pairs where the male plays deuce side (to get the early lead). In fact, my wife and I play with me on the deuce side as well.
When she's on the baseline, she sets up points for me to put the ball away. If the guy is foolish enough to approach the net, she either passes him, or lobs over the female partner (which causes the guy to hit the ball short for my overhead).
She also doesn't crowd the net because she's a very good volleyer, and moves seamlessly with me (based on my court positioning).
It's all about trust. If you don't believe in your partner and want to be playing singles in mixed doubles, have your female partner stay at the net. But playing mixed doubles with my wife (or a friend) is all about being partners. Although there are times when they feel more like an enemy on court than a friend on court
