For fear of sounding horrible, if you hadn't even been to see this dog and am assuming you have never had a miniature Schnauzer, how do you know that it could have been the ideal dog for you? I am really puzzled by this, whenever we get a dog from a rescue centre we always go there and look at the dogs, take a few for a walk, go back and do it again a few times until 1 dog just sort of 'clicks', the last time we went we wanted a puppy but none of them were right for us, we took 2 older dogs for a walk then as we were putting 1 of them back this little Lurcher just 'sold' herself, we took her for a walk and we knew we had then found the right dog, she was 6 months old, we lost her 3 years ago when she was 17 and a half years old. Go to your local shelter and see what happens, I'm sure you will be pleasantly surprised, tell the staff what you are looking for, they want these dogs re homed so won't let you take a dog they fell isn't suitable for you.