The colors of that garment are repulsive (I know Vanna's got to showcase the colors in her licensed line of yarn, so yeah, I get it, but yuck). However, it could be okay in a different palette and with some minor adjustments (vents at the lower sides). Expanded to somebody Corissa's size, however? It'll just be a disaster.
Unless it's done with large triple-stitches, or an openwork stitch pattern, crochet produces a thicker, stiffer textile, with less drape, than knitting does. It's great for some things (blankets, bags, hats, cat beds and toys, cushion covers), but not so great for others. Shaping pieces (such as the head of a sleeve) is also more difficult and less precise.
The strengths and weaknesses of crochet can still be used to advantage if you're really skilled and creative, but nearly all the patterns I see for crocheted garments are based on flat, geometric shapes—the square, boxy sweater or vest; the triangle bikini top; the hippie-mandala circle vest—because they're the easiest ways to get a wearable garment.
If Corissa's going to make a garment, she should just stick with a massive granny-square poncho. It will still be eye-bleedingly hideous, but it will at least be still be wearable over her ever-expanding girth by the time she finishes it, and she can keep adding squares to expand along with her, LOL.
Those are nice, and look good on a slim woman with no dramatic curves—but expanded to megafatty size? Yeahhhh—I don't think so....