The Color of Water I can still hear her weeping now sometimes. I know the exact sound of it, like a note you hear or a song that keeps spinning...

The Color of Water

I can still hear her weeping now sometimes. I know the exact sound of it, like a note you hear or a song that keeps spinning around in your head and you can't forget it. Every once in a while when I'm walking down the street I think I hear it, just a quick sniffle noise, like an "oh!" and I turn around and no one's there. - Page 214

What does the above quote indicate about Ruth's feelings towards her choice to leave her mother?