Help MumMum & Pawpaw Protect Grandkids

I'm my grandkids Pawpaw and my wife is their MumMum and and their father (our son) lives with us and we are looking for help for attorney costs to get our son full custody of his children over the grandkids druggie mother. I've never been a person to ask for help, but I'm disabled now and just asking for whatever you can donate to help with the attorney fee's.