I FUCKING FOUND THE AME BEE BGM HAHAHAHA
After almost a month of searching, hearing bgm after bgm in Dova Syndrome, Audiostock JP and US, other shitty free use BGM sites and music detection sites, i FINALLY FOUND IT, specifically in Audiostock JP filtering by durarion and instruments (Piano and Trumpet) i already made the search but with Saxophone 'cause i thought that was it, anyways the bgm is from February 2021 so i wonder if she found it that early and just archived it in her PC until she used it in June 2022 or found it after searching through a lot of songs like i did to find it, sorry for this much text but i feel so happy to have found it
https://audiostock.jp/audio/970303 
