It might help to understand how push notification control differs between primary and shared users and between accounts and devices,
There are three places to control push notifications:
Per camera in the cameras Settings > Event Recording > Send Push Notification. This can be controlled by the camera owner or shared user and will affect both.
Globally on an account basis by tapping the bell icon on the top right of the home screen, or using the switch in Account > Notifications. This affects only the owners or shared users login account on all devices they have logged in to the Wyze app.
In the phone’s OS settings, which can enable or disable all notifications from any particular app. This applies to only that particular phone/tablet. (Note: this is not possible in some versions of Android.)
You can think of the three notification control options as three concentric rings or gates. If the inner gate (level-1, per camera) is closed, no notifications get beyond that level. If the gate is open, then the notification can attempt to get past the next level (level-2, account), etc.
This may also help you choose between having your wife as a shared user or having her log into the primary account. It may not be obvious, but two devices can be logged into the same primary account and changes made on one will be reflected on the other.