do subliminals still work if the person doesnt know their listening to it?

So I was thinking to create a subliminal trying to change my moms mind about moving and add affs like "I never want to move from ____", "I am happy in my home", "____ is forever my home", "I will live where my daughter wants to". But I won't tell her she's listening to a subliminal, I'll just play it in the background for her and she'll think she's just listening to music. Will this work? will her subconscious mind still pick on the affirmations and change her decision?