If you want her to live a long and healhy life with you, don't breed her. DId you know many females can get very sick, have serious complications, and even die from pregnancy? Is that REALLY what you want for your Lucy? Also just because she's healthy doesn't mean she's a good candidate to be bred. Breeding should only be done to IMPROVE a breed therefore a responsible or ethical breeder will only breed a dog that has passed health check for genetic diseases, and most importantly is titled in some way. Whether it be conformation, Schutzhund, field and hunt tests, etc gaining a title proves that the dog is a good representation of the breed because either they are able to preform the task the breed was intended to, or they fit the breed standard conformationally. Please give more thought before you decide to breed. One more problem you're goinmg to come across is that no one with a worthy stud will allow their dog to breed with yours simply because she has not proven herself to be worth their dog's semen.
Adrienne, a Staffie is NOT the same as an American Pit Bull Terrier. A Staffie is an American Staffordshire Terrier or a Staffordshire Bull Terrier, they're three very different breeds although all are classifyed in the group called "Pit Bulls" along with a few other breeds.
This is a Stafforshire Terrier
http://www.gotpetsonline.com/pictur...tures/american-staffordshire-terrier-0004.jpg
This is a Staffordshire Bull Terrier
http://www.westminsterkennelclub.org/breedinformation/terrier/images/stbult.jpg
This is an American Pit Bull Terrier
http://www.dogbreedinfo.com/images4/PitBullDomino.jpg