The good news and the bad news.....(SPOILERS)
The good news is:
The siblings will be closer than ever.
The daughter will be getting a new pet.
The youngest son was too young to be completely traumatized.
The bad news is:
The oldest son will never be able to look at a vagina and fully enjoy it.
The daughter will have the BIGGEST Daddy issues of all time.
The Mom will never let Dad forget that he was attracted to a psychopath.