I pretty much agree on the precious interpretation; to me, it has a personal meaning as well.
I lost a loved one, she died, and I know the feeling to feel her in the distance, but of course she seems far away. "Are you gone or are you with me?/In my heart I'll never know" can then mean that I am asking myself if she is still there as some kind of ghost or has gone to Heaven, or is just not there anymore. There is no possibility of finding out what happened to her soul and stuff like that.
Without her it's sometimes difficult to find my own way back, home as well as through life.
I pretty much agree on the precious interpretation; to me, it has a personal meaning as well. I lost a loved one, she died, and I know the feeling to feel her in the distance, but of course she seems far away. "Are you gone or are you with me?/In my heart I'll never know" can then mean that I am asking myself if she is still there as some kind of ghost or has gone to Heaven, or is just not there anymore. There is no possibility of finding out what happened to her soul and stuff like that. Without her it's sometimes difficult to find my own way back, home as well as through life.