I've never seen
Raya before. It's a good thing you asked about
Maya, and Kaya because I wouldn't have used a long "i" sound for
Raya. I would have thought it was "RAY-uh."
Raya is pretty. It reminds me of
Raisa,
Reina and
Mireille /
Mireia /
Mireya. But you/she will probably have to pronounce it for others. Then again, maybe I'm just not plugged in on this one.