Howsoever superman you are, you are powerless in front of your wife.. :)
I would say that these things are unfortunate and can happen to any startup. Being a founder, you need to take action asap before things starts to go beyond control.
Even if some investigation is done into this matter, I don't think anyone will be found guilty as it's a general behavioral/attitude problem and it won't go in matter of days.
Let's stop this discrimination (howsoever minor) against women; we need to stand up and speak openly about this. And it's all the more important when a company is getting formed as culture of the company is defined in that stage.