Hello and welcome to you and your kitty
All my 4 cats are outdoor/indoor cats so I am very used to managing cats to the outdoors. The most important thing is that she is spayed, which if not already done then she is old enough to be
As you know cats have an excellent sense of smell and this is what your kitty will rely on when venturing out.
I would recommend that you are present during all times as possible when you let your cat out. Have a toy available, this will help you to entice your kitty back to you if you are getting anxious. Obviously in time you will not need to be there.
You will notice that the cat will only venture for a small distance, she will be getting the scent of the area into her memory, over time her circle of exploration will widen as she becomes more and more familiar with her surroundings.
When you 1st let her out, be with her, talk to her maybe walk with her to the part you think is far enough. Play with her and a toy. Develop your call for her, so she becomes familiar with that to. When she has had enough or feels scared, do not worry she will run back to where she feels safe - your house. Or as mentioned use the toy to 'take' her back to the house. You can control all of this as at any time you can pick her up and take her in.
Do this over a few months or more, you will know how well she is going on and she will soon get to know the area.
Well IÂ´ll leave it at that for the moment - if you have any questions, please feel free to PM me.