Say that again, please?

[isoldereverie.livejournal.com]

I hope some of you can enlighten me a bit on these names. I hope they are more cultural than fadish, but we never know, do we? The mom came into where I work the other day and I noticed her daughters' names. They are very unusual, seem hard on the eye, and even after I over heard Mom speaking to the little girls, I had to ask her how to pronounce the names.

Xochitl -little girl, about 3 years old, Latino I believe if that helps at all.
Xitlali -baby girl around 7 months, sister to the other girl

I realize the letter "X" is enjoying a peak in popularity. It's almost like "X" is the new "Y!" ;p Variations like Xach (for Zach),  Xander, Xane (for Zane) and so forth. These girls' names seemed to have reached a different level though. So, does anyone know a possible origin or background for these names? Are they cultural or just out there?

Oh yeah, as best as I can recall, XOCHITL was pronounced "SHO-tull" and XITLALI was pronounced "sit-LA-lee" <-- much more sure of this pronounciation than the other.