I am happy to hear that she is doing the testing and I really hope that she has done at least all of the CHIC tests. I also hope that you will not take home a puppy until you have the results of those tests.
I also agree with Pat that being "new" is no excuse. The information about basenji health is readily available on both the OFA website and the BCOA website. The CHIC tests are listed on OFA, http://www.caninehealthinfo.org/brdreqs.html?breed=BJ
The health concerns in the breed along with how to test for them are all described in detail on the BCOA site, http://www.basenji.org
A buyer should not have to tell a breeder what the health concerns in the breed are nor about the available tests that are available for those concerns. I buyer should know what to ask about a health testing and should seek a breeder who is knowledgeable enough and cares enough about their own dogs and the puppies they are choosing to produce to do the health testing to produce the best puppies possible.
Can the breeder tell you what the average lifespan of the dogs in you puppy's pedigree is? It is not just about doing the health testing. It is also about knowing if there is longevity in the family lines, and knowing what the temperaments of the dogs in the pedigree is.