So long story short, I reported my dad who has always been manipulative and controlling towards my mum, after I found "how to emotionally manipulate a woman" on his phone and his cheating antics I reported him to the police. Now he has hit my sister in the past on two occasions years ago so I also mentioned that. They said I should speak to my mum and sister about them making witness statements about my dad hitting her. I haven't spoken to my mum about it because the More I thought about it , I feel like it could make things worse for my mum as she has no plans on ever leaving him.
The police said that we can give witness statements and they can arrest him, or they can arrest him without the statements?
I don't remember exactly anymore if they will arrest him without the statement as I was extremely stressed at the time.
However I feel like him getting arrested would make matters worse, if I said this to the police would he still get arrested if we didn't give witness statements or could they close the case if I didn't want to pursue it?