Amy wrote a beautiful post on old and new selves that I think all stay-at-home mothers should read. I especially enjoyed her perspective of having been a teacher outside the home, and trading that for teaching in the home.
But no last bell, just quiet.
The quiet satisfaction of work well-done and days well-spent. Work never quite done, always to be repeated, fraught with imperfection and sin, a liturgy of love, a litany of my life for yours.