As a woman she is, I clearly understood that they are attracted to pleasures especially on activities that attracts public attentions. These species of humans (women) fails to understand that it is money that afford those pleasury materials and activities they craves for which one has to utilize himself logically in economical situations so as to create financial balanced system before chasing after those financial consuming activities without the potentials of yielding incomes.
I hope that your wife is your best friend right? I am not married but one day when I am ready to settle down and take all responsibility as a man, I will marry my best friend and I hope you have done the same because best friend understands each other more than they have misunderstandings. If she knows you have an investment, she ought to be understandable enough your reasons on not providing flashy lifestyle that she wants, she need to know the value of investment. However, if she fail to understand your intentions after all the talk, I don't think these is going to be the only misunderstanding you guys will have, there are many more that might come later, so be prepared for whom you marry as wife.
I just think that since you have your money on investment like Bitcoin, you shouldn't have proceed to marriage when you know such things will bring problems, you know the kind of woman you marry, you know better and see better than most of us here that are dropping our one cents and opinions.
I am a married man, and I can tell you categorically that my wife doesn't like public attention or even reckless spending, I am married to me best friend and my manager, she is in charge of our family finance's since sh can manage more than me, so it all about individual and not generally that women like extra vargant spending.
One of the thing that make women to behave extravagantly when they get married is the husband that cause it from the beginning, at least before you get married, you should already have seen traces of wastage in the spouse and at that you as the man should have work on caughting that habits down from the beginning, but most men fails in this regards because instead them to currect the lady at the unset, the take it as love and overlooked alot of things and when you finally get married it becomes too late to correct anything at that point.