You have 2 options.
In your GV account, turn off forwarding to GV Chat.
Add all your friends and family as contacts in a Group.
Forward that Group to GV Chat.
or
In the OBi200 GV trunk definition filter inbound calls by callerid allowing only friends and family to ring the OBi200 phone.
I think the 2nd is easier to setup.
The OBi200 only has 1 phone port, so all phones connected to it will have this filtering.
The OBi202 has 2 phone ports, so your daughter's phone can be on port#1 and you can have an unfiltered GV account on phone port#2.
OBi's supports inbound calls on a rotary phone, but outbound calls will not work.