Legal Fees to Keep My Son Safe

For legal reasons I can't say too much. The gist of the story is that my 16 year old son is an abusive relationship and I'm trying to get him help. But first I need to protect him and that's going to involve getting a lawyer. I am a single mom of 2 children and money is tight already. I hate asking for help but I'm desperate at this point. I will provide updates and receipts of any money used and if there's any leftover I will donate it to a local domestic violence shelter

Any amount helps. Please help if you can.