It’s made from your basic Red Heart-esque acrylic yarn. I made up the pattern as I went along. Starting at the bottom, I did kfb increases, and the netting is a basic YO, k2tog mesh. The handles are i-cord.
Since her birthday is on the 8th, and her new age ends in 8, I made the bottom of the bag have 8 increase points. 
So impressed that you made up this pattern on the fly! Nicely done.