What is the perfect bag for mums like me? The first thing to reveal is that there used to be battles when I was a teenager. My late Mum felt a handbag was an essential piece of kit for all girls and women. She had lots of different ones and I could never see the point of that. Now I sometimes see bags that remind me of hers and there is one of those little pangs of grief. They were very much a part of who she was. They were a bit like the Mary Poppins’ bag in terms of having every possible item you might need in them. When…