If Rose named more than one beneficiary of her trust, then you have fiduciary duties to each beneficiary. Carefully review the trust agreement to see whether you should treat all beneficiaries equally or whether you should consider some beneficiaries’ needs first.
You must always be impartial when you carry out your duties as Rose’s trustee.
Unless the trust agreement states otherwise, you cannot show any bias toward any one beneficiary. Because each beneficiary’s needs are different, you do not have to treat everyone the same. But you must act in each beneficiary’s best interest in an unbiased way.
Talk to a lawyer about what your duties are if Rose’s trust has named more than one beneficiary.