I think it is more natural not to use vowels, Zella started writing long before she cared to add vowels, and I suspect that I did too. I took Hebrew in college and at first I was shocked to find out that only we students would be using the vowel symbols and that the general Hebrew writing didn't usually include them. But then I took vowels out of english nd sw tht t ws stll rdbl fr th mst prt. Which isn't to say it is the same thing, like with Lily's writing the vowel sound is included in the pronunciation of the letter, I think that is how it goes.