Any creative person,specially in writing and acting fields,get inspired before creating act,in other people's experiences,listening,reading,and living by these other persons relating or by their own experiences.I guess that living in Wyoming herself,it will have been easy in some extent to her to,even, met someone in this case.And,above all,of course there's the genius of someone like her,able to put in the shoes of very different persons from her.Isn't what great actors,such Heath and Jake are,can do perfectly?.