Being hared by a stupid cousin!!!?

So my cousin is a druggie (some of you may remember my last question about her). Monday night she got drugged out of her mind and put Mike's Hard Lemonade in her 4 month old baby's bottle (she's 4 months old today) and fed it to the baby. I am so sick and tired of my family taking up for her just because they are afraid of hurting her feelings. She has been investigated (now) 4 times by DSS and they had yet to catch her doing enough to take the kids (even though they wanted to). Well, I called DSS on her and this time, they took the kids. The kids are with another family member and her family and they are doing great. But now that I finally succeeded in getting her busted, I'm so mad at her I can't stand myself. I can't even look at her because I don't want to go off on her and tell her exactly what I think. She has an idea that I'm the one that called DSS on her this time but she's not really sure and personally, I don't care if she does know. Anyway, now she is harring me, calling me all the time and pestering me about some stupid conversation she needs to have about this situation. Me? I'm done with trying to talk to her and I wish she would focus on getting herself straightened out and get her kids back. I really have no wishes of her loosing her kids permanently because I wouldn't wish that on anyone. But if she is not going to get help and before those kids go back into that situation again, I hope they terminate her rights. So, my question is this: I really need to be able to put my feelings about her behind me and try to help her with her problem so she can get straightened out. I feel that is my duty as a relative. But she is not willing to change, even now. She is still doing the drugs. How do I put my feelings about this girl behind me and help as much as I can? I don't want to be part of the problem, I want to be a part of the solution but right now, I can't look at her. I'm trying to rely on my faith but with 2 innocent kids involved, I'm struggling. I think my anger is due to me working so hard on getting something done for those kids and now, the feelings are all coming back at once. I keep telling her that I have nothing to say to her right now when she calls and I hang up. I can feel my blood boil everytime she calls. I don't want to feel this way. PS. We're not children (even though we're acting like it....I'm 36, married with 2 kids, and she is 34, single with 2 kids)