I must beg to differ with the sentiment that a reproduction of the M-Frame Lady Smith wouldn't or otherwise couldn't be successful due to the existence of the NAA Mini Revolvers.
By that logic, the Smith & Wesson Governor and Model 69 wouldn't/couldn't have been successful because Taurus had already dominated the market with the 4510 Judge and M44 Tracker.
I could provide even more examples if need be, such as S&W's success with polymer framed pistols despite Glock beating them to the market by over a decade, or better yet, the success of the SW1911 despite the market being flooded by 1911s of all kinds. Surely they shouldn't have been successful there either, right?
Or to give a more up-to-date analogy, the M&P9 Shield PLUS shouldn't be successful because SIGsauer and Springfield Armory have already dominated the market with the P365 and Hellcat respectively.
Furthermore, the M-Frame Lady Smith would be Double Action whereas the NAA Mini Revolvers are strictly Single Action, would hold 2 more rounds in the cylinder, and overall be much more suitable for self-defense because it could be fired more quickly.
Smith & Wesson has been successful by competing with companies who were already deeply entrenched in the market before, so there's no valid reason to believe that they couldn't be successful again.