In my case it’s kind of my fault since I’m on iOS so I have to sideload uYou+, and sometimes I forgot to refresh the app which means I have to connect my phone to my pc and refresh it manually, which put her off of a third party app.
But she has an android phone and, if all is still well and good in phone world since after I switched to Apple, she wouldn’t have to deal with that, which I told her. But so far she’s not interested and like you said, I have no idea why she puts up with it.