[TOMT][song] – japanese song from 2010s

so I used to talk to this girl like back in 2011-2014ish, and she introduced me to a lot of japanese bands. (like litchi hikari club, tamulalabel) well there were these few songs she said were made by like her aunt or her mom (something like that) now whether she was telling the truth or not we’ll never know but maybe she was because I cannot for the life of me find the music. as much as I can remember the album cover was black maybe white background with a blue or purple butterfly. it was a japanese female lead singer, some rock songs and other softer songs. she had a remarkable voice, very soft as well. but i cannot find anything on it, maybe it really was a relative of hers and was just unreleased personal tracks. if anyone might know please tell me