Coping with Bi-Polar WAW

[CountingCrows]

Although the Thanksgiving holiday has been emotionally tough, particularly yesterday when pulling out all the ornaments with s7 to decorate our Christmas tree, the lack of required contact with W has helped me detach somewhat better. W has had not called/texted at all except on Thanksgiving night when she called to wish S7 a good one.

Now it's Saturday, and I have told W that s7 could spend the night tonight, as I made plans to go out with friends about 2 weeks ago. I just checked my phone and she's called twice and left VM asking me to contact her to find out what the plans are for s7. W still sounds very sick and I'm not sure that being around sick people is a good idea for S7, since he's been fighting a cold since last weekend, when he spent the night and W's roommate's D6 was quite sick. I don't want to cancel my plans, but I also have S7's best interest in mind. I also don't want W to think I'm trying to keep her from seeing S7, since she's had so little contact this week, with school being out.

I also am struggling with what to do about the continued financial support I'm giving W. As I've said before, I promised not to leave her "destitute", and agreed to pay her a small "allowance" each week when I got paid until she got on her feet. When she left, she had no job, but has now been working for a few weeks, although she gets paid very little. My paycheck will be quite short next week, due to the loss of 2 days pay over the holiday (I'm contract and only get paid for the days I work). My thinking is that I will reduce her "allowance" by the 3/5ths that I'm being shorted next week, and tell her that it will continue to be reduced each following week.

At this point, she is making no attempts whatsoever to have any type of friendship or R with me, and is barely making efforts to retain a R with S7. I no longer have access to her call records, so I don't have any idea what the sitch is with OM, but I assume they are still carrying on with A, or she'd be coming to me for friendship/emotional support. I need to set a new boundary and let her know that I won't continue to pay her an allowance as long as she has nothing to do with our lives. Just don't want it to blow up in my face. Any suggestions as to how to approach this in the right manner?