My child (2) came over for normal custody switch. I took my child off of a pacifier, and out of diapers (fully potty trained.) All of sudden, my child jump while my mum was giving her a bath and said it hurt. She been grabbing at like her stomach/pelvic area. I also noticed her getting on top of my older child, moving back and forth on her. My two year old multiple times try to forcefully spread my other child legs apart and pull down her shorts and underwear. I separated them and she went and did the same thing again. She then came on my leg and started to move in a back and forth motion. I removed her from my leg. At nights, she wakes up out of sleep crying hysterically. She also no longer wants to go to the latrine with anyone besides me.