[UCANSEE2]

The map is going to show that it’s too far for Ford to have walked home, especially if she’d been drinking.

Not necessarily true. I would venture that the party was at HER PARENT'S HOUSE, who were out of town.

That's why she can't remember HOW she got there, or HOW she got home. She was at home. That's why she remembers every detail of the house. That's why she went UPSTAIRS to go to the bathroom. It was the bathroom she was used to using.

[ConservativeWarrior]

Interesting theory!