[ He hesitates. Who knows with Root? It's just speculation on his part, but Shaw seems interested, so... ]

Well... I don't like to put words in her mouth. I know she was often lonely, so perhaps just proof that she wasn't alone. Or it could be that your existence proves it's worth caring for others, worth saving them. She was adamant on that point by the end.

[ Which was a real turn of character for her from Harold's perspective. ]

Or maybe all of those things, or none of them.