RosaQ, try looking up the artist "Alternature." That's apparently the name under which her English-translated songs are released. You can preview and buy the MP3 album that includes the two songs you mentioned here:
The site is in Estonian, though, which might present a challenge.
Could anyone please tell me where I can find some more of Evelin's music? I LOVE "Diamond of Night" and "Over the Water Blue" - her voice is so beautiful and relaxing. I'd be extremely grateful if anyone can help - thanks so much for any help! :)