To sum up:
MacKenzie and Hunter believe a baby's bodily functions are more interesting and more important that mentioning to anyone that a girl with serious problems - that requires a therapist- tried to kill MacKenzie. Because they both think karma will do the job and get that woman out of the way.
I'm glad they are not my parents.
And on another note: if your story is 70% nonsense about babies' bodily functions, don't write it (unless it's non fiction, of course).