My sister aged 14 lives between mum
And dad.
Mum has new bf who has moved in with a year ago.
Today my sister told my dad that mum’s new boyfriend has been pushing her into her bedroom when she tries to leave it , shoutis at her and refuses to let her leave the house dressed in what he deems ‘inappropriate’ clothes.
Sister said mum’s boyfriend has apparently pulled at her skirts saying they are too short and she ( understandably) felt uncomfortable.
My dad doesn’t want my sister to return home to her mum after the weekend.
What should my dad do ?
Report to Police ? School?
What would police do ?
Social services ?
Would full custody be grated ?
I am very concerned .