I know this method of stretching will make most members shudder with doubt but having been a fitter for over thirty years we do have our little tricks to make shoes more comfortable. I have found that mechanical stretchers work to make a broad area wider but for a region of the little toe, these stretchers will show a distinct bulge that will throw off the shape in an ugly way.
Here goes, we take a contractors style broom and put the broom section against a wall and hold the handle between the legs as though you were going to take a ride on it. Place the end of the handle inside the shoe at the point were the stretch is needed and with a little pressure work the area back and forth on the end. A little shoe stretch solution inside the shoe helps soften the area. This really does work, I have done it a gazillion times on the best of shoes. And for anyones concern that I know what I say, I was the buyer of footwear for louis for thirteen years. Hope this works for you and if your toe is iritated from the shoes, let the toe heal before you wear them again.