What I remember:
1) Multi-chapter story
2) Adult brother and sister recently lost their father and found a journal of his from his childhood/adolescence
3) Father's journal starts up after his father died and he, his mother and his sister move into their paternal grandfather's estate. Incestuous relations between the three develop (can't recall one way or the other if the grandfather ever gets involved with that).
4) The adult siblings reading the journal are inspired to become an incestuous couple themselves.
I have looked and looked and I can't find this story on here. Any help would be appreciated. Thank you.
