Help me help my sister and nephews

[Redflowers8]

I am losing sleep worrying over my sister and her children. Her husband was killed in a motorbike accident almost 5 years ago leaving behind 7 year old twins and 9 year old (3 boys). Fast forward almost 5 years on and I see no improvement in fact things seem to go from bad to worse. The boys are now young teenagers and pre-teenagers and have all gone through various stages of grief. My sister I feel has put grief largely on hold due to lifestyle and kids. At the moment she is battling with them on a day to day basis which includes them (one twin in particular) punching, scratching and breaking her belongings. Today I witnessed a 12inch scratch on her arm and inside leg bruising from kicking. They swear and cuss and completely ignore any instructions. I lie awake at night wondering where this is all going to end. They seem to take it in turns to "pick" on her. My sister is quite strict with rules and regulations ie. the twins age 12 just received their first relatively basic mobiles (apparently the last kids to get a phone in their school) they have them removed at 8pm and not allowed on certain sites. There are other rules and restrictions that she tries to put in place but most often they rebel or ignore. She is exhausted, angry, aggressive, frustrated, lonely and sad. They have all received some counselling at various times over the last 5 years but it has never really hit the nail on the head or touched them enough to make a difference. I just don't see a future for them at least not a good one, I am looking for someone or an organisation that is effective. I am one of the few people that she has allowed into her life otherwise she lives behind closed doors. Does anyone have any advice or recommendations? We are in the Essex/London area. Thank you

[Yorkshirebornandbread]

I'm sorry to hear how difficult things have become. I don't have any experience to offer but hope that someone will come along with some wise words. All I can suggest is involving the police if there is physical violence against your sister. I hope this helps.

[RandomMess]

Perhaps family therapy is the way forward, so the DC can verbalise the anger and perhaps resolution found rather than physical assault and over zealous parental control?