Therefore I bought 10 meters of small-mashet fence.
I placed it where I wanted it to be and attached it to the ground with sticks. That way I could see how much place she got and I could think of how to continue with the making of her enclosed field.
#6 oh,yes and a lot of big stones in the field where I can stop her. With the bank there is another problem they have a bricwall and a fence abow it so she could crawl between the wall and the fence, but now I have put a lot of metal sticks and a short fence on my side of the border (is it the right word) and making it impossible for her to get up on the low brick wall.