If she will follow a 1940-50 pattern than Authomaticly there will be decreases and increases of stiches in the hips , the breasts etc,,, if i remember correctly we stopped making all those `tailoring` decreases /increases at the end of 60`s ,,,,
Any knitting unless it meant to be unsized needs some `tailored` pre planned stiches ...
I think moodern patterns are very Showing Off the knitter`s skills , so many laws of Do and don`t aren`t taught anymore that any knitter who can produce a fine knit should be congratulated . If she gaugues her wool ANY wool she can transpose her sizes ,,, easily , mirjam