Also, every time she comes out of the shower she shows me her body, and she often changes in front of me. It's not that unnatural for our family to undress in front of each other, especially for me as I normally need assistance, but it might be relevant
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I've told my parents about this before, and they just dismiss it as her joking and say just a sentence to her without doing any proper action or consequence
I'm not really sure what to do or how to feel about this