I agree with all of the answers above. Every pet we have ever owned has been spayed.
They really are the better for it. We don't need any more puppies sent to the shelter.
I know if I had ever let my Schnauzer have pups I could never have parted with them.
We have both a female Schnauzer and a male
Schnauzer and they are both neutered. Our daughter and our son also each have two Schnauzers and they are all neutered. If you wanted her for a loving friend and companion, do the right thing an have her spayed.