The List of Alternate Siobhan Pines Timelines For My Own Emotional Satisfaction
Default - Siobhan and Ford spend a few completely head over heels years together before a certain corn chip decides a happily married mark is too distractable and dedicates a few months to ruining their relationship.
Final straws are reached, Siobhan storms out, unknowingly carrying their child, and the events of canon play out as normal for Ford.
For Better or for Worse AU - Siobhan and Ford’s marriage doesn’t fall apart, but when his partnership with Bill reaches it’s dramatic end Ford realizes both his wife and his newly discovered unborn child are in the crossfire. He sends a heartbroken Siobhan away with the journal and a promise not to return.
A few months down the road, one Stan Pines finds a frightened pregnant woman in clear trouble that she refuses to talk about, and a book with a six fingered handprint she has a death grip on.
Fake Marriage AU - Siobhan ends up back in Gravity Falls. After hitting the home intruder in the face, she helps Stan rebuild the portal and sell his new identity by faking a marriage with him for thirty years. It actually goes great, until a certain overly romantic great niece detects the shameful lack of sparks in their relationship
No Helen in this one for simplicity.
Single Dad AU - Siobhan dies about 15 years before the events of the show, leaving already angry teen Helen to the care of her estranged father, who has obviously been lying to her since they met. Desperate for some sense of control, Helen starts looking into the mysteries of her new home and stumbles across a certain journal. Only good things will come of this.
Meanwhile Stan alternates trying to bond with his new niece/kid with the overwhelming frustration that teen parenthood brings. Not to mention the whole guilt thing, that’s a lot of fun.
Also baby Soos is there. Helen gets a little shadow that hopefully will learn her not to swear.