Sincerily I don't know how it works exactly, I hope that someone else can give you information. But I think that she can't oblige you to talk with a psychiatrist if you don't want, she can only suggest it.
But are you sure that you don't want? If she suggeste it it's because she thinks that it's the best thing to help you. But I think that you can also talk only with the psychologist if you prefer.
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