Yeah there is a lot of complexity to the process. Other things to consider include that if the child’s genes kill the mother they generally do this by causing

Yeah there is a lot of complexity to the process. Other things to consider include that if the child’s genes kill the mother they generally do this by causing the child to fail to exit the mother, which also kills the child. The exception to this would mostly be genes that result in the mother’s death from blood loss, after the child had exited, so related to placental issues/placement. But for this to succeed for the child it also assumes someone else would care for the child as well as the mother would have, which is unlikely at best.