Live with DP, SD 17, SS 15 and DD aged 2. BM lives 20 miles away and sees SD every weekend as they work together and SS about every 2wks for one night. She does nothing for them unless it fits into her work schedule, no clothes, no trips, holidays etc. etc. I do all shopping, cooking etc and work PT. Anyway huge row with DPs ex. wife last night as she said we dont do our share of dropping off and collecting. There is no routine just when it suits kids and her so dificult to plan. She put phone down on me and said it was none of my business as not real parent and I shouldn't be involved in this. She was screaming down phone saying nobody discussed with her and she'd had enough. I cant believe it. I feel I try really hard to help out and just feel like first class skivvy. SD has now got PT job near her mums and now expects us to drive and collect her some nights, she didn't even ask whether we would be prepared to do it and I'd also got her two phone no.s for jobs near our house which would have been ideal but she didnt return forms. Am I being unreasonable? I'm not sure. DP doesnt really get involved, its like he cant be bothered with his own kids as hes busy at work and says ex. justs puts phone down on him. Also feel he sees kids as a hindrance which I hate as its not there fault. What do I do, at the end of my tether, help please!!