Found three.
From The Lost Media Wiki
"Blue" is here, it is on "Curtain Call", its just extremely obfuscated: https://www.youtube.com/watch?v=ZFxddfyeMjo "Eyes of a Child" is here, it is not sung by her, however, it is composed by her. https://www.youtube.com/watch?app=desktop&v=LDTHuhnlAgQ "Broken" is here, again, it is on "Curtain Call", but the link is just obfuscated: https://music.apple.com/gb/song/broken/396593397 The rest I could not find.