Hi yes mum doesn't work , I know full well how time consuming it can be ferrying Kids here there and everywhere as I do it myself . SD has had cornet lessons previously at primary school and loved it and we were only intending on buying her a second-hand one to start with. Dp is certainly no Disney dad and we don't excessively spoil either off them.
dp does usually pay for anything additional directly as he has provided money for school trips previously only to have sd tell us it hadn't been paid. As the lessons are with school he can pay online so I can't see how that could embarrass her, she certainly doesn't get embarrassed asking for additional items, a £300 pet dog being the latest necessity.
Of course when we have sd with us she is fully involved in everything we do together and we always go swimming together as a family. It just breaks my heart when inevitably over summer holidays etc she sees dd going to her activities and says how much she wishes she could go too. Dp would just love his dd to have the same opportunities as my dd has.
I never get involved in discussions between dp and mum , there is no bad feeling between us , believe me she is more than happy for me to be involved and has even told me how much she appreciates the fact that I treat sd like my daughter.
I suppose it is down to individual ideas of what benefits your kids and I can understand that people have very different parenting ideas. Having known this person however for several years I think I can safely say that when it comes to doing anything that would benefit her daughter she does have a 'can't be bothered' attitude'. That includes parents evenings at school and dental appointments. things have improved slightly since social services paid her a visit a few weeks ago.
Sd's mum is never badmouthed in our home however it is getting more difficult to explain to her why she can't do the same things as her ss.
I suppose there is no answer but appreciate the responses.