IS ANYONE THERE....I NEED ADVICE

SO I don't know if anyone still uses the blogs or even reads them but I just really needed a place to vent. My brothers wife was checked into rehab two days ago for drugs then found out she about three months pregnant but checked her self out of rehab today! I'm so agitated and  mad that I can't even think up better vocabulary to use in this writing. When my sister Dawn found out she was histarical, who can blame her. This druggy took $2000 dollers from my brothers mom to go to rehab and checked out two days later. Then had the balls to say that she doesnt give a fuck about any of us. I condone drug use in moderation if you're sick or it's something spiritual but to let it wreck your life and your family is something else. My family was helping her, giving her another chance when her own family wouldnt, then she goes and pulls this kind of stuff. I'm at a loss of what to do. I don't feel it's my place to tell my brother this but then I flash back to everything. The appartment so bad that if CPS was called his girls would be taken, Knowing she put innocent lives in the crossfire of her addiction, the lies she told everyone in the family so that she could get money. I don't feel we were gullible but just to willing to help without question. I don't know how to deal so if  ANYONE reads these still can you please give me advice.