Dd and her friend have been going to the same club for two years. Friends mum suggested we share the dropping off and collecting. I can do either but collect most of the time at other mum's request. We live at opposite ends of the same town so we each have to go out of our way to drop off/collect the other child. My dd no longer needs dropped off at this club, she gets there by another means as she now goes straight from another activity. Friend's mum obviously still has to drop her dd off and still expects me to bring her dd home which I have been doing and won't stop doing tbh but I am a bit annoyed that she benefits from these new circumstances and not us. AIBU to feel this way or am I being really petty?