In the intro scene when Hillary tells her father "I need to use the kybo" and he tells her to "speak English", Hillary is using a slang term for bathroom. A "kybo" is a temporary toilet set up when camping, often also referred to as an "outhouse" or a "porta-potty". The term is often used by some groups which promote camping activities such as Girl Scouts, Girl Guides and Boy Scouts.
It is revealed that when Lilly was six years old, her mother purposefully lost her in the mall to get some booze.
Hilary West was killed on 26 May 1964.