I have kept this to the back of my mind for at least a decade now. I've gone on this sub and rambled about my grandmother and how emotionally manipulative she can be...
But I remember as a little kid, she asked me and my younger sister (16) a strange question. We were playing this roleplay game, okay cringey little kid games, and I suppose all because my sister removed a hanger on our grandmother's bed and put it on a dresser, she assumed we were "messing with her stuff" (which was already disorganized and stored way out of our reach. Besides...little kids interested in an old lady's clothes...???). She got extremely mad at us when we hadn't done anything wrong at all. We were both confused back then. She'd told us how she'd get our parents to punish us, and fast forward to later, our parents "grounded" us for a few hours the rest of that day. Anyways, let's rewind back to when we were only with our grandmother going ballistic over nothing. 
She suddenly asked the both of us if...we'd been "touching" each other. Now, as little kids, we had no idea what exactly she was getting at. We could only imagine she was being super weird. I'd felt deeply uncomfortable. She was implying something about incest essentially to my understanding today. Is that truly appropriate to make of two sisters simply hanging out with each other and playing classic little kid roleplaying games? I don't know to this day why our grandmother randomly sexualized our relationship. We were fucking children. We barely understood what she meant. 
I decided to ask this year if my sister remembered our grandmother's weird question and she said she did. My sister always wondered if I had remembered. Both of us have pushed this memory to the back of our minds and have told nobody. Not a therapist, not our parents, not any other adult. Should we have? My relationship with my grandmother to this day is practically non existent. My mother lives with her because she has to, and that's only why I do have to be around my grandmother because I'm living with her as well to support my mother. My grandmother for the past several years has just been emotionally abusive throughout my early teenhood. She's purposefully cut me off for choosing to live with my father when my parents divorced. She's abandoned me twice over things an adult should be handling with maturity. She's spread lies about me when she's fought with me on social media for relatives/family friends to get involved (which they did not luckily). She tried to use the police to kill me (I'm black, and well, she is very aware of the relations between the community and the police). Then she lied to my older sister about what had happened. She also told me that I would be "happy when she died". Then she wonders why I don't really care to be around her anymore. I don't feel love for her. She's just like an emotional vampire. She apologizes and continues the hurtful behaviors she apologized for. Insists we "heal" and "forgive". She's also justified her behavior, saying her folks did worse or whatever. She has no emotional boundaries whatsoever or boundaries in general. My mother is stuck in a trauma bond cycle with her, too.