None of her achievements, sorry to say, are particularly impressive. I have a mare who was 1D at the local level and who, before becoming injured, was looking to have the potential to be a winning 2D world horse. She was beating pro rodeo horses when they schmoozed on the local circuit. She has incredible heart and incredibly athleticism. Her conformation and bloodlines are, truly, better than your mare's--but because she did not hold up physically, despite everything working in her favor--I cannot justify breeding her and risking perpetuating more of the same.
I've had a little 14.1 hand grade pony, chubby and stout, who could, without expending much effort, run 21-second poles. I have a big old grade Paint gelding who is a 20-second pole horse and 1D local barrel horse...or was, until he became crippled and undiagnosable by multiple vets and farriers. Were he a mare, I also would not breed him, for his unsoundness alone.
Only the best horses should be bred. Your mare does not appear to rank among that number--not by bloodlines, conformation, athleticism, or achievments. No, you did not specifically ask whether your mare should be bred, but it is absolutely relevant to your original question. I suggest you familiarize yourself more with the horse market at large.