Another Gizmo Post.. Why Is This So Difficult

Okay, first off, hi everyone!

I have a Verizon account with a gizmo watch and phone number attached to it for the kiddo. I now have the Verizon family app because the native gizmo app no longer works.

QUESTION! Can someone plainly explain how my wife, who has her own Verizon account, can continue using the full functions that the gizmo app used to offer (text/video call, etc.) to communicate with our child?

I'm guessing we're hosed and that only I, the owner of the Verizon account, will be able to have full access.

Time to go elsewhere? Or has anyone found a solution with Verizon?