I admit that qualification of a claimant is a crude way of making an instant assessment of the validity of a claim. I wouldnt ignore a claim if a claimant wasn't qualified in that field, but if they are qualified that is a useful piece of information.
So let's ignore that, and concentrate on the two more important factors: peer review and replication.
There are many ways in which a single piece of research, or single finding, or group of findings from the same researcher, can be very flawed.
Thats why the scientific process demands not only peer review, but replication of the experiment by other scientists, to see if the same results are found. You can't make much of any experimental results until these two things have happened.
So the question is, has Joanne Scarpellini published her findings in a peer-reviewed journal, and what is the opinion of the community of scientists who work in this field?