Where Should a Rainbow Appear

Just a note, random note.

I used to see rainbow (which I believe there’s only one rainbow on this broken earth) on the sky, above.
Everyone, who could normally see, and has the normal function of (at least) an eye, can see it, the most beautiful thing up there, without any exception.

And what if we make it as a parable. Let me tell you a story.
A man ever said to his girlfriend, who he loves the most, he really fall into her, ‘you’re the star in my life, you’re the sunshine and rainbow after the rain’
It’s not a bullshit, he really meant it.
But he cannot tell her mom, who had stroke attack few years ago, that he loves this girl.

Do you think the girl is his rainbow?