At this point, she is about 5 years old? (Correct me if I'm wrong) I personally feel it's better to spay when they are old enough, but still young enough for the surgery to not have any implications. It's fine to spay when they are older, but you have to be more cautious as well. If you haven't already, make sure to talk with your vet about her health and such before spaying.I've been getting lots of hay.
It's true that she doesn't like play pens that much, and escapes the uncovered ones.
There's no males around the area so no possibility of pregnancy, I'm planning on getting her spayed.