I suppose Williamson is going to take the Tom King approach and ignore all three of them altogether. His Batman is out of Gotham to make room for the Blackman, why should he care about Babs or Steph? He will most likely leave this Batgirls mess to somebody else, most likely in editorial, to untangle. It was only Tynion who was this uniquely autistic and meddly towards the Batfamily. Most Batman writers really don't give a fuck about Batgirls and Robins.