I could not agree more with tw.
Just to add that, let the grand daughter shoot the grease plate as she is the one to use the gun. From this you can see what is all really going on with both gun & shooter.
My bet is that she will surprise you & the chokes will be good to go as they are.
As a boy I learned to shoot a very tight Beretta 12 gauge gun. Any choke less than that was then easy peasy.
O.M