As others have noted, there's plenty of women out there who approve of crossdressing, even in their spouses. My wife does too. Am I "lucky"?
I don't see it that way. I think you make your own luck. I'd been through enough relationships with women who were supportive and women who were not supportive of my crossdressing to know that I did NOT want to have a wife that was not supportive. So, I told her long before we were engaged, doing so a few months after we started dating. It went well. It's not always been peaches and cream. There's been some bumps in the road. But, she's an absolutely wonderful woman, and she is 100% supportive of my crossdressing.
Had I not said anything to her before we got married, I'd have no idea whether she'd be supportive or not. In that sense, it would have been luck of the draw. But I didn't play to lady luck's desires. I told myself I'd break up with my then girlfriend if she didn't accept crossdressing, and go find another person to date, and keep repeating that cycle until I found someone that was supportive.
Yes. You're not going to be able to convert her into being supportive. You've tried to cross the bridge, but she's not accepting the overtures. Drop it. She's already effectively told you where she stands on the issue, and doesn't want to contend with a crossdressing husband.
You're in a rough situation. You will continue to crossdress, but your wife won't approve. I wish it were different for you.