Gretna is generally safe for solo female travelers. As with any destination, it's always a good idea to maintain awareness of your surroundings and adhere to basic safety precautions, such as avoiding isolated areas during late hours and staying in well-lit areas. Locals are generally friendly and willing to help if needed. As it's more a rural area, crimes rates are lower compared to larger cities. However, it's still advisable to secure your belongings and not let your guard down completely.