I kind of like Astrella.
Estrella is pronounced Es-tre-yah. The double l (ll) in Spanish is pronounced like a y. When I was in Ecuador I met a girl about four with this name. I thought she said her name was Traya, but her friend corrected me. I "created" a name from Traya that is similar to yours. I changed the spelling of Trella to Treya to get the pronunciation I wanted and then added an A at the beginning. I say "created" because I am sure someone else thought of it first and my sister pointed out that Atreya is like the feminine form of Atreyu from The Neverending Story. I don't think I'll ever get to use it, though. My husband nixed it without consideration :(