Would you recuse yourself irrespective of behavior for any student? We have no grandchildren and if I did that would be my children’s call. Our two were brought up in no paddling states but I’m sure my wife would be on the same page and would recuse unconditionally. In case of a school we sent them to we would sign the opt out waiver available to all parents at 18 for our son and maybe 15 in the case of my daughter but due to issues not pertaining to gender. Our kids went from Daddy and Mommy to Dad and Mom and I suspect they’ll do so forever. Hypothetically as their teacher it would be the same way of adderssing in home and school. I would strive to be impartial or as least evident as possible.
We’ll always be Mom and Dad and not a first name basis. As they grow older and have kids they’ll think kinder of me as I did mine but I’ll never be as kind in their eyes than their mother. Kindness is a sign weakness or so I’m told!!!