rayray - thanks, I will do that.
DS's dad has agreed to share the costs with DF and I so am very happy about that.
cindyb - thanks for your comment about me being a good mum!! A couple of months ago I had an argument with DF's family over
DS's behaivour. His mum is very old school and she told me that my "son is a manipulator who is going to turn out just like his father". And then proceeded to call me a bad mum. I know I'm not - I'm doing the best that I can. Needless to say, we no longer speak!