Song about losing someone and regretting not saying i love you?

my gramma just died :( and i wasnt very close with her. i mean i saw her all the time, but i wasnt all that nice to her. i wasnt mean though eaither. and same thing with her. we just had a real weird relationship. is there a song or quote or lyric that describes me loving her and she doesnt know it. or i never told you i love you. i dont want boyfrend-girlfriend stuff. things related to death.