Did Max have Stockholm Syndrome?
Esther manipulated her quite well by pretending to love her.
She forced her to get involved with her antics and felt obligated to cover for her given her very young innocent age and all.
You don't understand what Stockholm Syndrome is. Stockholm Syndrome is when you feel genuine love and attachment to the person who holds you captive.
Once Ester became abusive, max was silent under fear... not because she liked ester.