Cafodd ei phenodi ym mis Tachwedd 2015, ac mae'n bwriadu gadael ei swydd erbyn 30 Tachwedd oherwydd cyfuniad o ymrwymiadau gwaith eraill a rhesymau personol.
She was appointed in November 2015, and will step down from the post with effect from 30 November due to a combination of other competing work commitments and personal reasons.