Does she want it in the boxy like the shape of a large tissue box or like in post #9?

She wants it boxy. It's for a baby carrier. I could have bought it for $29.95 but she wanted me to make it. It's driving me nuts. I think I might have found the answer but still not completely sure. https://www.trulymyrtle.com/blog//20...-tutorial.html

How about this pattern?

simplicity pattern 2274

Oh I think I see what you are looking for now!! here are the results of a google search for "boxy zippered pouch tutorials. Lots of choices and I hope you find the size you are looking for.
https://www.google.com/#q=boxy+zippered+pouch+tutorial

Jenny with MSQ has good tutorial on youtube called "The Zipper Pouch: An Easy Quilting Project Tutorial by Jenny Doan of Missouri Star Quilt Co" .

Not sure why you are ending up with 6x4??? Cut a 19" piece and fold it in half then you should press a good middle bottom seam. When you make your box corners, the side seam meeting the bottom press mark and sewing scant 3" to each side of the seam should give you a 6 x 6 x 6 with 1/2" at the top (on both sides) for the zipper area. The width of your fabric should be 17" to allow for a 10" width and 3" on each side (making for a 6" depth) with a 1/2 seam. (Whenever I make purses, pouches or similar items, I like to use 1/2" seams because I double stitch for extra reinforcing.) The only thing I can come up with is that you are accounting for the correct size for height and depth, but not for the width. To restate - your piece needs to be 19" by 17". Please let us know what you figured out.

The impression I got from the original poster was that the daughter wanted it boxed on top and the bottom.

So - if she does want it boxed on the top and the bottom - that would be 6 + 6 + 6 + 6 plus 1 inch seam allowance for the circumference by the needed width - which I agree that 17 inches would work.

Yes just like this. I'm pitching the piece of fabric I've worn out and starting over. I'll try 17" X 25". Wish me luck! Thank you everybody.