Do I have to say anything?
You don't have to say anything to the counsellor (family consultant) that you don't want to.
Some children don't want to tell the counsellor (family consultant) things that might upset their parents. Other children want to tell the counsellor (family consultant) about what they think even if their parents might get upset. Its OK for you to do that if you want.
It is up to you to decide how much or how little you want to say.