Me and my grilfriend both vape. I notice a big difference though in vaping priority. For me it is also about expirimenting to find the best vape, for her it is just about a satisfactory vape. I like complicated mods with lot's of features, see likes it simple and straigth forward. It just has to do what it is supposed to do. Size and weigth of the device is a big factor for her.
So she is very happy with her Istick, while I am curently on a Sigelei 75W TC, no matter the technical benefits of my device, she won't even consider changing over to such a device.
If your wife is anything like that I would also recommend an Istick, but not the 30w but the 40W with TC. It is about the same size, looks even a bit better (it has no lip, nicer firebutton) and costs about the same, and you get some extra features and wattage (which offcourse you don't have to use)...it makes a great combo with the Nautilus mini.