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While this is certainly not ethical, it is not prohibited (a financial adviser does not have a confidential relationship such as you would find with an attorney/client or physician/patient communication).
You may want to get the trust document itself which governs these funds so that you can move them to a new trust fund manager that you can have more confidence in. A new financial advisor or money manager will be able to help you with this - if you run into problems, then hire a lawyer. (Your current bank's branch manager or supervisor can help you with referrals to local money managers or financial planners if you do not have someone in mind).