Sweet, Sweet Indigo

Indi's older sister has been there for her since the day she was born, even moreso after she transitioned. There was nobody else to talk to, after their father used both of them. They grew up together, suffered together, eventually ran away from home together. Now they live in a van, trying to make things work out in the small corners of their hometown. They're not kids anymore. How long can they keep this up?