My partners 7yo daughter has recently started touching herself. We walked in on her on the sofa with her hands in her trousers and knickers, rubbing her private parts with some... vigor. We were absolutely speechless and sort of backed out of the room, and discussed whether we thought we'd seen the same thing. It hadn't happened again until last night when I thought I'd heard the neighbours crashing about and went upstairs to check it hadn't woken her, to find the noise was coming from her violently rubbing her hot water bottle between her legs. I was home alone, as my partner (her dad) was at work, so I closed the door, went back downstairs and called up to "check she was ok". I don’t want to approach the subject alone, as I dont feel its my place.
His daughter has a very settled routine here, even in lockdown as we are both keyworkers so she has remote learning, and then school two days a week. She has a set bed time, and boundaries. However, from what she tells us, life is very chaotic at mummy's. (My OH has 50/50 custody) she falls asleep on the sofa and gets carried to bed, or spends the night on the sofa, watches TV far too old for her (she knows the theme song for Mrs Brown's Boys - we don't watch it) and plays age inappropriate games on the xbox ("when me and mummy shoot zombies, she says they're you and daddy")
This sudden and overtly sexual behaviour is concerning. I work with those sentenced at her majesty's pleasure, so I'm worried I'm automatically assuming the worst. Is she just a very early developer?