Wow, I was starting to think no one liked me. lol. and then you all come back with all this great advice. Thank you all very much.
Here is the sitch with my S. We are having seperate parties. I had one with my side this past weekend, it went great. She is having one this weekend with her side and om. I couldn't possibly be in the same room with him without tearing his head off so it's best that I don't go. I told my son that I had to go to my brothers (in maine...I'm in western NY) and he understood. My S and D are always first and foremost in my life and I think it's best for all involved to do the bday this way.
As far as her bills go...you're all absolutely right, she's on her own. Same with christmas, I've been smart enough to tuck money away so the kids won't be going without.
I am kinda being an enabler this weekend though with my trip to maine. I'm fronting her quite a bit of money and buying a car from my brother for her. I'm hoping by doing this that she'll see that I'm the one constantly helping her. I'm the one that gives a [censored]. BUt I also know that it could back fire and be a kick to the nuts....we'll see how it turns out.
thank you all for your help.
For anyone interested in my sitch try starting here.