I'm done! My idea with the speech bubbles is that Cloudpaw is telling Brindleface (Who was just k!lled by Tigerclaw) to wait another day, and she answers with 'I'll be back before you know'.
Credit to @GlacierDog92 and dragoncat12 for the MAP, Wait Another Day by Mike Williams/Mesto is the song, and the characters are Cloudpaw and Brindleface, who are from Warriors by Erin Hunter!