Got lost. 2

When I was a high school student, I talked about that when I got lost with my family.
The couple who took care of me tried to adopt me.
They thought abandoned children about me.
Because I was unsanitary, and they had not their baby.
My mother said, “I wonder if you went so far.”
Then my older sister said “It’s me. I took her so far. I leave her there and go home. I hate her because everyone loves her, and I was left alone.”
When we heard that we were made sad.
But she was laughing happily.

I think she may be a psychopath.