Popups are inevitably a camping experience, not an RVing experience. If your wife doesn't like camping, there's not much cure for it.
I like to say that if people ENJOY tent camping, but desire a better night's sleep and a few more conveniences, a popup is perfect. If people hate tent camping, a popup ain't going to be enough better to make them happy.
It's also why I think the pup manufacturers have made a huge market share mistake in focusing all their marketing on loaded luxo-models. Those aren't going to sell in enough numbers to work. A pup has to be an upgrade to a tent, not a poor man's RV. It's a fantastic tent, but a lousy RV. Market to those who LIKED their tents, but just want a LITTLE more comfort.