Seriously. Try this.
Get a pillow. Tell her to put her face into the bed, while her belly and upper body is lying on the pillow, and her ass is as high up as it can get. As long as she isn't some fat bink, chances are, her ass is going to be pretty well spread at this point, exposing "the goods".
Then, grabbing each of her ass cheeks, one in each hand, spread that shit, particularly with your thumbs, with the rest of your fingers on the top of her ass. Her "goods" will be spread enough to park a Buick. If you can't get in there now, it's time to start thinking about re-constructive surgery on your tiny-ass dick.
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