Omg HELP

My 4 year old just told me “mommy I’m scared” I told her “awww baby there’s nothing to be afraid of what’s wrong?” She said and I quote “did you know some mommy’s kill their kids like they put them in a car and drive the car into the lake and get out with out the baby” 🤭I kind of sat there and processed what she just said and told her “baby it’s ok your ok those mommy’s have something seriously wrong with them!!!” Then she made the saddest face like she was gonna cry and said “your not gonna kill me are you I love you your my mommy” 😭 I bout burst out crying!!!! What the actual f**k!!! Her memaw watches a lot of lifetime that’s all I can think of on where it came from but omg what do I do she’s not sleeping now!!!