Women giving homilies happens frequently in the Rochester diocese. To act as though the Bishop is unaware of this happening is to hand him a bigger insult than to say he accepts it.
From
Redemptionis Sacramentum :
**"[64.] The homily, which is given in the course of the celebration of Holy Mass and is a part of the Liturgy itself,[142] “should ordinarily be given by the Priest celebrant himself. He may entrust it to a concelebrating Priest or occasionally, according to circumstances, to a Deacon, but never to a layperson.[143] In particular cases and for a just cause, the homily may even be given by a Bishop or a Priest who is present at the celebration but cannot concelebrate”. **
It is heterodox for a lay person to give the homily. Clearly, the Church Magisterium teaches that this is wrong. Ignoring this teaching is deciding that the Church Magisterium is not your authroity.