I use less water than she does, but I think it depends on your hair type. If you're natural and not worried about your hair reverting then it doesn't matter, if you relaxed or texlaxed and want to use this on the daily you may want less water so you can moisturize without ruining your style.
I use Lily of the Valley dietary grade Aloe Vera Gelly, I fill about 1/3 of the spary bottle with it, and then add equal amount of glycerine. I also add SAA sometimes, or infusium depending on my hair situation - I then fill what's left with filtered water, and top it off with some grapefruit EO for scent. You can add any EO you want, like rosemary, or peppermint depending on personal taste. I love this b/c I never worry about it clogging my scalp. For intense moisture, I spray this on, then cover with a dab of creamy leave in, and then seal with oil and put my hair up for the night. In the morning it's soft, shiny, and manageable.
HTH!