It appears I failed at uploading mine or something. But yeah, rhymes with jazz but with a hard g.
Did he (or she, but I seem to recall Gaz uses male pronouns) ever clarify on the correct pronunciation?
My first guess for Elesia was right, but looking at the spelling I thought it might be a Latin name, Eh-lay-see-a.
And my brain automatically often glosses over -sia and -tia so for example I pronounce the Khajiit protagonist in Prequel, Katia, as "Catty a" in my head but I read it out loud like "Kay shuh." Which I guess might be just slurring words or an accent or something.