Anselm, Saint, Archbishop of Canterbury. [Letter to Matilda, abbess of Caen] in Sancti Anselmi Cantuariensis Archiepiscopi Opera Omnia 4.218-19

[Letter from Anselm, archbishop of Canterbury, to Matilda, abbess of Caen]
Archbishop Anselm answers the abbess's request for advice about giving up her position, though it is not in his jurisdiction, with suggestions about alternate plans if she fails to get permission.
Online at Epistolae (See also Bibliographia record).