I also have a Glock 43 and Sig 238 if she prefers, but my thought process is the same as perfor8. I don’t want her to have to worry about inadvertently hitting the mag release or having some sort of jam. A j frame of any flavor is pretty much idiot/novice proof.She can get a Maine Non-resident permit at 18 and OK will honor it. I would also suggest trying a few other pistols. Let her try something other than just revolvers, and if you go 351PD, have that hammer bobbed. Nothing against revolves, as I have a handful in my carry rotation including a 642, but there are a few semi autos that might fit her better.