To expect step daughters mum to pay some child support? Step daughter lives with us abroad and has done for the last 5 years (before that we did 50/50). Now she sees her mum during school holidays and we pay for the flights to facilitate this. Mum refuses to pay anything, despite working full time, being a homeowner, etc. Obviosuly my step daughter doesn't go without, we are comfortably off and make sure all of our children have everything they need, however it just doesn't feel right that she has no financial responsibility towards her. Do you think it's acceptable for one parent to just not pay towards their child's upbringing?