
To be honest I would want to try for natural whelping anyway as you need to know if she had inertia due to some problem of puppy presentation etc. If she has inertia again you will need to seriously rethink your breeding program, as this is then most likely to be a hereditary problem and likely to manifest in her offspring.
With my own bitches my first home bred had a C section, but it was her third and last litter which was small for the breed and she had not had a litter for 3 years. Her daughter and Granddaughter both have had 3 litters without a problem in this regard, and great granddaughter has had her first litter also.
If I had a C section for a first litter I would breed a second to find out if this were a one off or a problem. If the later then the daughters would not be bred from.