
How old is she - I know you said she is too young, but how young is that? I find it difficult to tell if a bitch is going to be good enough to breed from until she's about 3 years old, and has had all the breed relevant tests done, and any hereditary problems that can't be tested for should have appeared if they were going to.
A bitch has to have a very sound temperament to be worth breeding from. Having a litter won't improve a poor temperament; instead the puppies are likely to inherit the mother's temperament. It won't make her any healthier in the future, either.
So get a copy of "The Book of the Bitch" and read it carefully.
Also read previous postings on this site from heartbroken people whose bitches and/or litters have died. Nature doesn't always know best.