hiya, i'm sorry to sound harsh but come on! If she goes in the navy she will be GOING TO WAR whether she is an officer or medical assistant. Going to war is significantly more scary (to me anyway) than travelling from liverpool to pompey. You talk abut "the world we live in today" but tbh, the vast majority of people are nice! if she gets lost all she has to do is ask someone. if its haslar she is going to then its only a short ferry ride away fromt he station at the harbour. You asked for peopes opinions, and in my opnion you can get married at 16 annd live away from home, so traveling from 1 part of the country to another should be a breeze. Take your lead from her, if she is happy to go, then be happy to let her go