Trustees cannot add an attorney-in-fact (AIF) or other agent as an authorized signer on the trust's deposit account unless the trust instrument permits it. The language you have cited suggests she is the settlor/grantor of the trust and the trust, if revocable, can be amended. If she wants to have an AIF or agent authorized to act on her behalf, she should arrange with her attorney to amend the trust to permit it. Otherwise, her current AIF can only act on her behalf outside the trust.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8