Motueka is generally a safe destination for solo female travelers. It's a small, friendly town with a low crime rate. The locals are known to be welcoming and helpful. It's also a popular location for many tourists, which means that businesses are used to dealing with visitors and are often more than willing to assist should you need any help. As always, it's prudent to be aware of your surroundings and use common sense, but overall, Motueka is a secure location for solo travel.