ds is in reception class and was born with no left arm from just below the elbow, she has made a lovely little friend, whom i think is getting a little bit obsessed with my dd, calling all her toys the same as dd, wanting hair the same and wanting people to call her by my dds name, and telling everyone that my dd is so so pretty, which i think is really sweet and she is a lovely little girl, this morning, she came running up to me with her arm tucked up inside the sleeve of her cardigan and announced she too has a "little arm" like my dd, it made me smile and dd laughed and off they went, other mum couldnt apologise enough and seemed upset, i dont see what the problem was, little girl was not being nasty or anything, not sure if mum was embarrassed or getting concerned with the obsession her dd has with my dd, should i say something to her or just leave it, the teachers think the same as me that its lovely and dont believe there is any sort of problem, i dont want other mum to tell her dd not to do certain things that she feels maybe upsetting to me or my dd