I always assumed that Mattie was a french basset cause we read somewhere's that french bassets are taller.
the term french or english basset hound do very little to impart any information. The problem is they are used basical interchangeable as an excuse by breeder as to why there hounds do not come close to the breed standard except for the single ececption I gave about "registered pack hounds" having less waist length ie close coupled.
For every reference that say french hounds are taller there will beone claining the same about english etc. Let us just say that the terms are use to discribed hounds that look more like the foundation breed Basset artesian normand than the breed standard for "basset hound" Generaly speaking they have straighter legs and less bone. The muzzle is often snippier and the ears are flater and rounder rather than having the Fold.
as for actual hieght it really does not matter however a dog with straighter legs, less chest and less bone will look taller than a more conformationally correct basset hound of the same height. but to say "french hound" are taller is not correct in the way the term is normal used, keeping in mind however that the term is used quite often to discribe dogs that are not similar in conformation. which makes such a term rather useless because it means different things to different people, except as a side note to run away quickly from a breeder that describes their dogs as such
Als keep in mind the breed standard for the BAN is shorter than it is for the Basset hound
(11.8 to 14.2ins) for the BAN and (12–15 inches (30–38 cm) for the basset hound with over 15" being a disqualifing fault in the AKC for basset hounds. (note disqualify does not mean exempt from being register only they can not compete in conformation ring, that is it is a fault so agregious that even if the dog had no other faults it is serious enough to prevent it from even being considered. )
Bassets de Bérénice
hope it clears thing up but unlikely because there is not a concensus on what a "french" or "english" basset is.
History of French Bassets Hunting Dogs