A family member of mine is domestically abusing his partner. Whilst I’ve never seen it directly, he has been recorded screaming and threatening her, we’ve seen her with bruises a few times, he smashes up the house, several family members have screenshots of the abusive messages he sends her and frankly they’re disgusting. He spends all their money on gambling and drugs (although I'm pretty sure she also partakes in smoking weed). They’ve got small children in the mix who I’m very worried about. He’s been arrested previously as she’s had to call the police on him and neighbours have reported them to social services and they’ve been investigated, but still nothing seems to be happening as she often covers it up (which I’m not blaming her for, I’ve been in a controlling relationship myself and I understand why she may be anxious about being honest) and I’m getting increasingly concerned that she or the kids are going to get seriously hurt. All in all it’s a horrible situation and I feel anxious about just standing by and watching it happen.
My question is, should I also be reporting to the police/social services? Clearly they are already aware but I wasn't sure if it was the kind of situation where the more reports the more likely they are to do something about it? Or will I be getting involved unnecessarily?