The problem is that I cannot see any way where multiple users
can be workable when it comes to incoming telephony, because that depends on what SIM is in the phone but not on what user is logged on.
The puzzle is that the description of the feature actually says:
What's not shared
- Files and messages, such as texts, email, photos, music and more
Now it's obvious how photos will be associated to the user who takes them, emails to that user's account, music to the user who downloads it. Outgoing texts are also fine. But there just isn't the information available to reliably associate incoming texts to the correct user, so whatever way they handle this
will get it wrong at least some of the time.
So what puzzles me, and annoys me, about that description (which I copied from my phone's Help information on this setting) is that it lists "texts" together with all of these other things where it's perfectly clear which user they belong to. This can only encourage exactly the assumption that your daughter made, and Google really should have done better than that.
