I don't have a great deal to do with my DSD's mother and when I do, it's all very pleasant - at the moment!!
We have had a lot of issues though, she is a very neglectful mother but DSD has been living with us now for a year and a half and she finally seems to be pulling her head in...
As for my XDH - he is a controlling, vindictive, abusive person - we will always have problems now that I have backbone and am stronger!