Okay so actually I heard a song named 'Right where I Belong' によって Wendy Wagner. & I was wondering that it's perfect for chihiro to sing after leaving the Spirit world! Imagine her 歌う this..
♫ Sometimes when night has come
the river sings a song... ♫
♫ In my Dreams it seems to lead me
Right where I belong... ♫
♫ Wondering everywhere
each way I turn is wrong ♫
♫ Now Im wishing I could be there
Right where I belong ♫
♪ Smiles that have warmed me
Arms that have held me ♪
♪ Is all a part of who I am ♪
♪ Its never easy leaving your フレンズ behind ♪
♪ Someplace was meant for me
and thats what keeps me strong ♪ .....
♫ Now Im wishing...
I could be there ♪
♫ Right where I Belong...♪