Had a lovely neighbour. We always chatted over the fence and her child would come round and play with my children. When they started school I offered to walk their child to school with mine on the one day I didn't work. Then I moved. I said I'd still be able to walk their child to school with mine as their house is on the way. So now I walk their child to school one day a week. But we don't really have contact any other time. If I message to ask about a catch up or a play date they don't even reply. I understand everyone's busy and she has some health issues but AIBU to give up on this friendship ?