She added that if the purpose, format and first steps were agreed then the terms of reference could be considered at an initial meeting of the working group.
Ychwanegodd pe bai'r pwrpas, y fformat a'r camau cyntaf yn cael eu cytuno, yna gellid ystyried y cylch gorchwyl mewn cyfarfod cychwynnol o'r gweithgor.