I don't understand, did your neighbour just open her door and give your boots to someone passing her door? Or was the person she gave the boots to in your house. I would think the neighbour is very stupid or she liked the boots and kept them. Either way I think you have lost the boots and will have to put it down to experience. Have a word with your G.p. about your mental health and don't give any more parcels to your neighbour to take In.