Those conscripted women might have been better off working in the factories, as a variation of the "90 division gamble". Instead of adding to the logistic strain, they could have been reducing it by increasing production (preferably in key areas, like trucks).
Let's just pretend logistics and strategy are not the issue (this entire counter factual is ridiculous anyway since its based on the absurd supposition that the Nazi would conscript female soldiers).
But of course I see your point. To get more to the fundamentals of the question, let's suppose 'what would have happened' (lol) 'had the Barbarossa invasion force been twice its historical size?'
Dave is of the opinion that the logistics strain would have been beyond the capability of the Nazi war machine and furthermore that these 'free soldiers' would not have been free at all (presumably being drawn from the German labour pool) and thus the scenario I describe would bring out foremost the crushing inadequacies of the entire Nazi military complex.