April Fools gone Horribly wrong

I cannot believe what my mom did earlier today as a April Fools Joke, knowing that it was a traumatic memory for me when it happened the first time round. She was in the kitchen and cried out that she did it again, catching a falling knife, and is bleeding really badly. I stay calm, rush to get the gauze as she is running her hand under water whimpering that it hurts and is really bleeding. I finally make it to the sink with the gauze ready to help apply pressure and see how deep the cut is this time. It’s ketchup. I walk a way a bit and break down crying remembering the first time my mom caught a falling knife when I was much younger. She was gushing blood and crying on the stairs with my sister and I comforting her. My dad continued to eat his dinner and wouldn’t drive her to the hospital until he had finished. My sister and I stayed at our neighbors for the night, it was never talked about for years. As I am crying, something I rarely do in front of people unless pushed past my point of reason. My mom apologizes and finally agrees it wasn’t funny and that she is not to do things that are trauma inducing purposely. Hopefully it sticks this time. She only ever seems to listen when I break down, something I absolutely hate and she know this. We are in family therapy for these very reasons.