Birthing Day is an event depicted in The Grim Barbarity of Optics and Design.
They meet when Devon goes in search of coffee, and finds it at Gabby's luxurious cabin. Gabby tells Devon then that she is going to name the baby William.
It is later discovered that she named the baby Bradley. She has no memory of meeting Devon or wanting the name William for her third child. What other choices were taken away from her via the use of her severed chip?